Merge pull request #961 from keepassxreboot/feature/big_refactor1.7.0-beta1

Big refactor

22 files changed, 1774 insertions, 2095 deletions

diff --git a/keepassxc-browser/_locales/en/messages.json b/keepassxc-browser/_locales/en/messages.json
index 31804df..685253d 100644
--- a/keepassxc-browser/_locales/en/messages.json
+++ b/keepassxc-browser/_locales/en/messages.json
@@ -263,6 +263,10 @@
         "message": "No credentials for the given username found.",
         "description": "Alert message when no credentials are found for the given username."
     },
+    "credentialsNoTOTPFound": {
+      "message": "No TOTP found.",
+      "description": "Alert message when no TOTP is found."
+    },
     "credentialExpired": {
         "message": "Expired",
         "description": "If a credential is expired, this is appended to the title label."
diff --git a/keepassxc-browser/background/browserAction.js b/keepassxc-browser/background/browserAction.js
index 282cd96..bf0c26c 100755
--- a/keepassxc-browser/background/browserAction.js
+++ b/keepassxc-browser/background/browserAction.js
@@ -2,33 +2,30 @@
 
 const browserAction = {};
 
-browserAction.show = function(tab) {
-    let data = {};
-    if (!page.tabs[tab.id] || page.tabs[tab.id].stack.length === 0) {
-        browserAction.showDefault(tab);
-        return;
-    } else {
-        data = page.tabs[tab.id].stack[page.tabs[tab.id].stack.length - 1];
+browserAction.show = function(tab, popupData) {
+    if (!popupData) {
+        popupData = page.popupData;
     }
 
+    page.popupData = popupData;
+
     browser.browserAction.setIcon({
         tabId: tab.id,
-        path: '/icons/toolbar/' + browserAction.generateIconName(data.iconType, data.icon)
+        path: browserAction.generateIconName(popupData.iconType)
     });
 
-    if (data.popup) {
+    if (popupData.popup) {
         browser.browserAction.setPopup({
             tabId: tab.id,
-            popup: 'popups/' + data.popup
+            popup: `popups/${popupData.popup}.html`
         });
     }
 };
 
 browserAction.showDefault = async function(tab) {
-    const stackData = {
-        level: 1,
+    const popupData = {
         iconType: 'normal',
-        popup: 'popup.html'
+        popup: 'popup'
     };
 
     const response = await keepass.isConfigured().catch((err) => {
@@ -36,77 +33,41 @@ browserAction.showDefault = async function(tab) {
     });
 
     if (!response && !keepass.isKeePassXCAvailable) {
-        stackData.iconType = 'cross';
+        popupData.iconType = 'cross';
     } else if (keepass.isKeePassXCAvailable && keepass.isDatabaseClosed) {
-        stackData.iconType = 'locked';
+        popupData.iconType = 'locked';
     }
 
     if (page.tabs[tab.id] && page.tabs[tab.id].loginList.length > 0) {
-        stackData.iconType = 'questionmark';
-        stackData.popup = 'popup_login.html';
+        popupData.iconType = 'questionmark';
+        popupData.popup = 'popup_login';
     }
 
-    browserAction.stackUnshift(stackData, tab.id);
-    browserAction.show(tab);
+    browserAction.show(tab, popupData);
 };
 
-browserAction.removeLevelFromStack = function(tab, level, type, dontShow) {
-    if (!page.tabs[tab.id]) {
-        return;
-    }
-
-    if (!type) {
-        type = '<=';
-    }
-
-    const newStack = [];
-    for (const i of page.tabs[tab.id].stack) {
-        if ((type === '<' && i.level >= level)
-            || (type === '<=' && i.level > level)
-            || (type === '=' && i.level !== level)
-            || (type === '==' && i.level !== level)
-            || (type === '!=' && i.level === level)
-            || (type === '>' && i.level <= level)
-            || (type === '>=' && i.level < level)) {
-            newStack.push(i);
+browserAction.updateIcon = async function(tab, iconType) {
+    if (!tab) {
+        const tabs = await browser.tabs.query({ 'active': true, 'currentWindow': true });
+        if (tabs.length === 0) {
+            return;
         }
-    }
-
-    page.tabs[tab.id].stack = newStack;
 
-    if (!dontShow) {
-        browserAction.show(tab);
+        tab = tabs[0];
     }
-};
 
-browserAction.stackPop = function(tabId) {
-    const id = tabId || page.currentTabId;
-    page.tabs[id].stack.pop();
-};
-
-browserAction.stackPush = function(data, tabId) {
-    const id = tabId || page.currentTabId;
-    browserAction.removeLevelFromStack({ 'id': id }, data.level, '<=', true);
-    page.tabs[id].stack.push(data);
-};
-
-browserAction.stackUnshift = function(data, tabId) {
-    const id = tabId || page.currentTabId;
-    browserAction.removeLevelFromStack({ 'id': id }, data.level, '<=', true);
-    page.tabs[id].stack.unshift(data);
+    browser.browserAction.setIcon({
+        tabId: tab.id,
+        path: browserAction.generateIconName(iconType)
+    });
 };
 
-browserAction.generateIconName = function(iconType, icon) {
-    if (icon) {
-        return icon;
-    }
-
+browserAction.generateIconName = function(iconType) {
     let name = 'icon_';
     name += (keepass.keePassXCUpdateAvailable()) ? 'new_' : '';
     name += (!iconType || iconType === 'normal') ? 'normal' : iconType;
-    name += '.png';
 
-    return name;
+    return `/icons/toolbar/${name}.png`;
 };
 
 browserAction.ignoreSite = async function(url) {
diff --git a/keepassxc-browser/background/event.js b/keepassxc-browser/background/event.js
index 5b1e2f8..862f0d3 100755
--- a/keepassxc-browser/background/event.js
+++ b/keepassxc-browser/background/event.js
@@ -13,13 +13,16 @@ kpxcEvent.onMessage = async function(request, sender) {
     }
 };
 
-kpxcEvent.showStatus = async function(tab, configured) {
+kpxcEvent.showStatus = async function(tab, configured, internalPoll) {
     let keyId = null;
     if (configured && keepass.databaseHash !== '') {
         keyId = keepass.keyRing[keepass.databaseHash].id;
     }
 
-    browserAction.showDefault(tab);
+    if (!internalPoll) {
+        browserAction.showDefault(tab);
+    }
+
     const errorMessage = page.tabs[tab.id].errorMessage;
     return {
         identifier: keyId,
@@ -29,7 +32,7 @@ kpxcEvent.showStatus = async function(tab, configured) {
         encryptionKeyUnrecognized: keepass.isEncryptionKeyUnrecognized,
         associated: keepass.isAssociated(),
         error: errorMessage || null,
-        usernameFieldDetected: page.usernameFieldDetected
+        usernameFieldDetected: page.tabs[tab.id].usernameFieldDetected
     };
 };
 
@@ -57,11 +60,9 @@ kpxcEvent.onLoadKeyRing = async function() {
     return item.keyRing;
 };
 
-kpxcEvent.onSaveSettings = async function(tab, args = []) {
-    const [ settings ] = args;
+kpxcEvent.onSaveSettings = async function(tab, settings) {
     browser.storage.local.set({ 'settings': settings });
     kpxcEvent.onLoadSettings(tab);
-    return Promise.resolve();
 };
 
 kpxcEvent.onGetStatus = async function(tab, args = []) {
@@ -76,7 +77,7 @@ kpxcEvent.onGetStatus = async function(tab, args = []) {
         }
 
         const configured = await keepass.isConfigured();
-        return kpxcEvent.showStatus(tab, configured);
+        return kpxcEvent.showStatus(tab, configured, internalPoll);
     } catch (err) {
         console.log('Error: No status shown: ' + err);
         return Promise.reject();
@@ -107,18 +108,12 @@ kpxcEvent.lockDatabase = async function(tab) {
     }
 };
 
-kpxcEvent.onPopStack = function(tab) {
-    browserAction.stackPop(tab.id);
-    browserAction.show(tab);
-    return Promise.resolve();
-};
-
 kpxcEvent.onGetTabInformation = async function(tab) {
     const id = tab.id || page.currentTabId;
     return page.tabs[id];
 };
 
-kpxcEvent.onGetConnectedDatabase = function() {
+kpxcEvent.onGetConnectedDatabase = async function() {
     return Promise.resolve({
         count: Object.keys(keepass.keyRing).length,
         identifier: (keepass.keyRing[keepass.associated.hash]) ? keepass.keyRing[keepass.associated.hash].id : null
@@ -143,102 +138,46 @@ kpxcEvent.onUpdateAvailableKeePassXC = async function() {
     return (page.settings.checkUpdateKeePassXC > 0) ? keepass.keePassXCUpdateAvailable() : false;
 };
 
-kpxcEvent.onRemoveCredentialsFromTabInformation = function(tab) {
+kpxcEvent.onRemoveCredentialsFromTabInformation = async function(tab) {
     const id = tab.id || page.currentTabId;
     page.clearCredentials(id);
     page.clearSubmittedCredentials();
-    return Promise.resolve();
 };
 
-kpxcEvent.onLoginPopup = function(tab, logins) {
-    const stackData = {
-        level: 1,
+kpxcEvent.onLoginPopup = async function(tab, logins) {
+    const popupData = {
         iconType: 'questionmark',
-        popup: 'popup_login.html'
+        popup: 'popup_login'
     };
 
-    browserAction.stackUnshift(stackData, tab.id);
     page.tabs[tab.id].loginList = logins;
-    browserAction.show(tab);
-    return Promise.resolve();
+    browserAction.show(tab, popupData);
 };
 
-kpxcEvent.initHttpAuth = function() {
+kpxcEvent.initHttpAuth = async function() {
     httpAuth.init();
-    return Promise.resolve();
 };
 
-kpxcEvent.onHTTPAuthPopup = function(tab, data) {
-    const stackData = {
-        level: 1,
+kpxcEvent.onHTTPAuthPopup = async function(tab, data) {
+    const popupData = {
         iconType: 'questionmark',
-        popup: 'popup_httpauth.html'
+        popup: 'popup_httpauth'
     };
 
-    browserAction.stackUnshift(stackData, tab.id);
     page.tabs[tab.id].loginList = data;
-    browserAction.show(tab);
-    return Promise.resolve();
-};
-
-kpxcEvent.onMultipleFieldsPopup = function(tab) {
-    const stackData = {
-        level: 1,
-        iconType: 'normal',
-        popup: 'popup_multiple-fields.html'
-    };
-
-    browserAction.stackUnshift(stackData, tab.id);
-    browserAction.show(tab);
-    return Promise.resolve();
-};
-
-kpxcEvent.pageClearLogins = function(tab, alreadyCalled) {
-    if (!alreadyCalled) {
-        page.clearLogins(tab.id);
-    }
-    return Promise.resolve();
-};
-
-kpxcEvent.pageGetLoginId = async function() {
-    return page.loginId;
+    browserAction.show(tab, popupData);
 };
 
-kpxcEvent.pageSetLoginId = function(tab, loginId) {
-    page.loginId = loginId;
-    return Promise.resolve();
-};
-
-kpxcEvent.pageClearSubmitted = function() {
-    page.clearSubmittedCredentials();
-    return Promise.resolve();
-};
-
-kpxcEvent.pageGetSubmitted = async function(tab) {
-    // Do not return any credentials if the tab ID does not match.
-    if (tab.id !== page.submittedCredentials.tabId) {
-        return {};
-    }
-    return page.submittedCredentials;
-};
-
-kpxcEvent.pageSetSubmitted = function(tab, args = []) {
-    const [ submitted, username, password, url, oldCredentials ] = args;
-    page.setSubmittedCredentials(submitted, username, password, url, oldCredentials, tab.id);
-    return Promise.resolve();
-};
-
-kpxcEvent.onUsernameFieldDetected = function(tab, detected) {
-    page.usernameFieldDetected = detected;
+kpxcEvent.onUsernameFieldDetected = async function(tab, detected) {
+    page.tabs[tab.id].usernameFieldDetected = detected;
 };
 
 kpxcEvent.passwordGetFilled = async function() {
     return page.passwordFilled;
 };
 
-kpxcEvent.passwordSetFilled = function(tab, state) {
+kpxcEvent.passwordSetFilled = async function(tab, state) {
     page.passwordFilled = state;
-    return Promise.resolve();
 };
 
 kpxcEvent.getColorTheme = async function(tab) {
@@ -249,6 +188,12 @@ kpxcEvent.pageGetRedirectCount = async function() {
     return page.redirectCount;
 };
 
+kpxcEvent.pageClearLogins = async function(tab, alreadyCalled) {
+    if (!alreadyCalled) {
+        page.clearLogins(tab.id);
+    }
+};
+
 // All methods named in this object have to be declared BEFORE this!
 kpxcEvent.messageHandlers = {
     'add_credentials': keepass.addCredentials,
@@ -266,26 +211,27 @@ kpxcEvent.messageHandlers = {
     'get_keepassxc_versions': kpxcEvent.onGetKeePassXCVersions,
     'get_status': kpxcEvent.onGetStatus,
     'get_tab_information': kpxcEvent.onGetTabInformation,
+    'get_totp': keepass.getTotp,
     'init_http_auth': kpxcEvent.initHttpAuth,
     'is_connected': keepass.getIsKeePassXCAvailable,
     'load_keyring': kpxcEvent.onLoadKeyRing,
     'load_settings': kpxcEvent.onLoadSettings,
-    'lock-database': kpxcEvent.lockDatabase,
+    'lock_database': kpxcEvent.lockDatabase,
     'page_clear_logins': kpxcEvent.pageClearLogins,
-    'page_clear_submitted': kpxcEvent.pageClearSubmitted,
-    'page_get_login_id': kpxcEvent.pageGetLoginId,
+    'page_clear_submitted': page.clearSubmittedCredentials,
+    'page_get_login_id': page.getLoginId,
+    'page_get_manual_fill': page.getManualFill,
     'page_get_redirect_count': kpxcEvent.pageGetRedirectCount,
-    'page_get_submitted': kpxcEvent.pageGetSubmitted,
-    'page_set_login_id': kpxcEvent.pageSetLoginId,
-    'page_set_submitted': kpxcEvent.pageSetSubmitted,
+    'page_get_submitted': page.getSubmitted,
+    'page_set_login_id': page.setLoginId,
+    'page_set_manual_fill': page.setManualFill,
+    'page_set_submitted': page.setSubmitted,
     'password_get_filled': kpxcEvent.passwordGetFilled,
     'password_set_filled': kpxcEvent.passwordSetFilled,
-    'pop_stack': kpxcEvent.onPopStack,
     'popup_login': kpxcEvent.onLoginPopup,
-    'popup_multiple-fields': kpxcEvent.onMultipleFieldsPopup,
     'reconnect': kpxcEvent.onReconnect,
     'remove_credentials_from_tab_information': kpxcEvent.onRemoveCredentialsFromTabInformation,
-    'retrieve_credentials': keepass.retrieveCredentials,
+    'retrieve_credentials': page.retrieveCredentials,
     'show_default_browseraction': browserAction.showDefault,
     'update_credentials': keepass.updateCredentials,
     'username_field_detected': kpxcEvent.onUsernameFieldDetected,
diff --git a/keepassxc-browser/background/init.js b/keepassxc-browser/background/init.js
index 4b05ed4..7400ac8 100644
--- a/keepassxc-browser/background/init.js
+++ b/keepassxc-browser/background/init.js
@@ -8,6 +8,7 @@
         await httpAuth.init();
         await keepass.reconnect(null, 5000); // 5 second timeout for the first connect
         await keepass.enableAutomaticReconnect();
+        await keepass.updateDatabase();
     } catch (e) {
         console.log('init.js failed');
     }
@@ -48,9 +49,6 @@ browser.tabs.onRemoved.addListener((tabId, removeInfo) => {
  * @param {object} activeInfo
  */
 browser.tabs.onActivated.addListener(async function(activeInfo) {
-    // Remove possible credentials from old tab information
-    page.clearCredentials(page.currentTabId, true);
-
     try {
         const info = await browser.tabs.get(activeInfo.tabId);
         if (info && info.id) {
diff --git a/keepassxc-browser/background/keepass.js b/keepassxc-browser/background/keepass.js
index 49a9ab5..a234e31 100755
--- a/keepassxc-browser/background/keepass.js
+++ b/keepassxc-browser/background/keepass.js
@@ -36,7 +36,8 @@ const kpActions = {
     DATABASE_LOCKED: 'database-locked',
     DATABASE_UNLOCKED: 'database-unlocked',
     GET_DATABASE_GROUPS: 'get-database-groups',
-    CREATE_NEW_GROUP: 'create-new-group'
+    CREATE_NEW_GROUP: 'create-new-group',
+    GET_TOTP: 'get-totp'
 };
 
 const kpErrors = {
@@ -86,6 +87,27 @@ browser.storage.local.get({ 'latestKeePassXC': { 'version': '', 'lastChecked': n
     keepass.keyRing = item.keyRing;
 });
 
+const messageBuffer = {
+    buffer: [],
+
+    addMessage(msg) {
+        if (!this.buffer.includes(msg)) {
+            this.buffer.push(msg);
+        }
+    },
+
+    matchAndRemove(msg) {
+        for (let i = 0; i < this.buffer.length; ++i) {
+            if (msg.nonce && msg.nonce === keepass.incrementedNonce(this.buffer[i].nonce)) {
+                this.buffer.splice(i, 1);
+                return true;
+            }
+        }
+
+        return false;
+    }
+};
+
 keepass.sendNativeMessage = function(request, enableTimeout = false, timeoutValue) {
     return new Promise((resolve, reject) => {
         let timeout;
@@ -95,11 +117,16 @@ keepass.sendNativeMessage = function(request, enableTimeout = false, timeoutValu
         const listener = ((port, action) => {
             const handler = (msg) => {
                 if (msg && msg.action === action) {
-                    port.removeListener(handler);
-                    if (enableTimeout) {
-                        clearTimeout(timeout);
+                    // Only resolve a matching response or a notification (without nonce)
+                    if (!msg.nonce || messageBuffer.matchAndRemove(msg)) {
+                        port.removeListener(handler);
+                        if (enableTimeout) {
+                            clearTimeout(timeout);
+                        }
+
+                        resolve(msg);
+                        return;
                     }
-                    resolve(msg);
                 }
             };
             return handler;
@@ -122,6 +149,9 @@ keepass.sendNativeMessage = function(request, enableTimeout = false, timeoutValu
             }, messageTimeout);
         }
 
+        // Store the request to the buffer
+        messageBuffer.addMessage(request);
+
         // Send the request
         if (keepass.nativePort) {
             keepass.nativePort.postMessage(request);
@@ -777,6 +807,51 @@ keepass.createNewGroup = async function(tab, args = []) {
     }
 };
 
+keepass.getTotp = async function(tab, args = []) {
+    const [ uuid, oldTotp ] = args;
+    if (!keepass.compareVersion('2.6.1', keepass.currentKeePassXC, true)) {
+        return oldTotp;
+    }
+
+    const taResponse = await keepass.testAssociation(tab, [ false ]);
+    if (!taResponse || !keepass.isConnected) {
+        return;
+    }
+
+    const kpAction = kpActions.GET_TOTP;
+    const [ nonce, incrementedNonce ] = keepass.getNonces();
+
+    const messageData = {
+        action: kpAction,
+        uuid: uuid
+    };
+
+    try {
+        const request = keepass.buildRequest(kpAction, keepass.encrypt(messageData, nonce), nonce, keepass.clientID);
+        const response = await keepass.sendNativeMessage(request);
+        if (response.message && response.nonce) {
+            const res = keepass.decrypt(response.message, response.nonce);
+            if (!res) {
+                keepass.handleError(tab, kpErrors.CANNOT_DECRYPT_MESSAGE);
+                return;
+            }
+
+            const message = nacl.util.encodeUTF8(res);
+            const parsed = JSON.parse(message);
+            if (keepass.verifyResponse(parsed, incrementedNonce) && parsed.totp) {
+                keepass.updateLastUsed(keepass.databaseHash);
+                return parsed.totp;
+            }
+        } else if (response.error && response.errorCode) {
+            keepass.handleError(tab, response.errorCode, response.error);
+        }
+
+        return;
+    } catch (err) {
+        console.log('getTotp failed: ', err);
+    }
+};
+
 keepass.generateNewKeyPair = function() {
     keepass.keyPair = nacl.box.keyPair();
     //console.log(nacl.util.encodeBase64(keepass.keyPair.publicKey) + ' ' + nacl.util.encodeBase64(keepass.keyPair.secretKey));
@@ -1159,9 +1234,7 @@ keepass.reconnect = async function(tab, connectionTimeout) {
 
 keepass.updatePopup = function(iconType) {
     if (page && page.tabs.length > 0) {
-        const data = page.tabs[page.currentTabId].stack[page.tabs[page.currentTabId].stack.length - 1];
-        data.iconType = iconType;
-        browserAction.show({ 'id': page.currentTabId });
+        browserAction.updateIcon(undefined, iconType);
     }
 };
 
@@ -1169,7 +1242,8 @@ keepass.updatePopup = function(iconType) {
 keepass.updateDatabase = async function() {
     keepass.associated.value = false;
     keepass.associated.hash = null;
-    await keepass.testAssociation(null);
+    page.clearAllLogins();
+    await keepass.testAssociation(null, [ true ]);
     const configured = await keepass.isConfigured();
     keepass.updatePopup(configured ? 'normal' : 'locked');
     keepass.updateDatabaseHashToContent();
diff --git a/keepassxc-browser/background/page.js b/keepassxc-browser/background/page.js
index d75af94..0099b1e 100755
--- a/keepassxc-browser/background/page.js
+++ b/keepassxc-browser/background/page.js
@@ -24,14 +24,20 @@ const defaultSettings = {
 
 var page = {};
 page.blockedTabs = [];
+page.currentRequest = {};
 page.currentTabId = -1;
 page.loginId = -1;
+page.manualFill = ManualFill.NONE;
 page.passwordFilled = false;
 page.redirectCount = 0;
 page.submitted = false;
 page.submittedCredentials = {};
 page.tabs = [];
-page.usernameFieldDetected = false;
+
+page.popupData = {
+    iconType: 'normal',
+    popup: 'popup'
+};
 
 page.initSettings = async function() {
     try {
@@ -136,11 +142,11 @@ page.initOpenedTabs = async function() {
         // Set initial tab-ID
         const currentTabs = await browser.tabs.query({ active: true, currentWindow: true });
         if (currentTabs.length === 0) {
-            return Promise.resolve();
+            return;
         }
+
         page.currentTabId = currentTabs[0].id;
-        browserAction.show(currentTabs[0]);
-        return Promise.resolve();
+        browserAction.showDefault(currentTabs[0]);
     } catch (err) {
         console.log('page.initOpenedTabs error: ' + err);
         return Promise.reject();
@@ -149,18 +155,18 @@ page.initOpenedTabs = async function() {
 
 page.switchTab = function(tab) {
     browserAction.showDefault(tab);
-    browser.tabs.sendMessage(tab.id, { action: 'activated_tab' }).catch((e) => {});
+    browser.tabs.sendMessage(tab.id, { action: 'activated_tab' }).catch((e) => {
+        console.log('Cannot send activated_tab message: ', e);
+    });
 };
 
-page.clearCredentials = function(tabId, complete) {
+page.clearCredentials = async function(tabId, complete) {
     if (!page.tabs[tabId]) {
         return;
     }
 
-    page.usernameFieldDetected = false;
     page.passwordFilled = false;
     page.tabs[tabId].credentials = [];
-    delete page.tabs[tabId].credentials;
 
     if (complete) {
         page.clearLogins(tabId);
@@ -176,10 +182,19 @@ page.clearLogins = function(tabId) {
         return;
     }
 
+    page.tabs[tabId].credentials = [];
     page.tabs[tabId].loginList = [];
+    page.currentRequest = {};
     page.passwordFilled = false;
 };
 
+// Clear all logins from all pages and update the content scripts
+page.clearAllLogins = function() {
+    for (const tabId of Object.keys(page.tabs)) {
+        page.clearCredentials(Number(tabId), true);
+    }
+};
+
 page.setSubmittedCredentials = function(submitted, username, password, url, oldCredentials, tabId) {
     page.submittedCredentials.submitted = submitted;
     page.submittedCredentials.username = username;
@@ -189,17 +204,18 @@ page.setSubmittedCredentials = function(submitted, username, password, url, oldC
     page.submittedCredentials.tabId = tabId;
 };
 
-page.clearSubmittedCredentials = function() {
+page.clearSubmittedCredentials = async function() {
     page.submitted = false;
     page.submittedCredentials = {};
 };
 
 page.createTabEntry = function(tabId) {
     page.tabs[tabId] = {
-        'stack': [],
-        'errorMessage': null,
-        'loginList': []
+        credentials: [],
+        errorMessage: null,
+        loginList: []
     };
+
     page.clearSubmittedCredentials();
 };
 
@@ -221,3 +237,61 @@ page.removePageInformationFromNotExistingTabs = async function() {
         }
     }
 };
+
+// Retrieves the credentials. Returns cached values when found.
+// Page reload or tab switch clears the cache.
+page.retrieveCredentials = async function(tab, args = []) {
+    const [ url, submitUrl ] = args;
+    if (page.tabs[tab.id] && page.tabs[tab.id].credentials.length > 0) {
+        return page.tabs[tab.id].credentials;
+    }
+
+    // Ignore duplicate requests
+    if (page.currentRequest.url === url && page.currentRequest.submitUrl === submitUrl) {
+        return [];
+    } else {
+        page.currentRequest.url = url;
+        page.currentRequest.submitUrl = submitUrl;
+    }
+
+    const credentials = await keepass.retrieveCredentials(tab, args);
+    page.tabs[tab.id].credentials = credentials;
+    return credentials;
+};
+
+page.getLoginId = async function(tab) {
+    // If there's only one credential available and loginId is not set
+    if (page.loginId < 0
+        && page.tabs[tab.id]
+        && page.tabs[tab.id].credentials.length === 1) {
+        return 0; // Index to the first credential
+    }
+
+    return page.loginId;
+};
+
+page.setLoginId = async function(tab, loginId) {
+    page.loginId = loginId;
+};
+
+page.getManualFill = async function(tab) {
+    return page.manualFill;
+};
+
+page.setManualFill = async function(tab, manualFill) {
+    page.manualFill = manualFill;
+};
+
+page.getSubmitted = async function(tab) {
+    // Do not return any credentials if the tab ID does not match.
+    if (tab.id !== page.submittedCredentials.tabId) {
+        return {};
+    }
+
+    return page.submittedCredentials;
+};
+
+page.setSubmitted = async function(tab, args = []) {
+    const [ submitted, username, password, url, oldCredentials ] = args;
+    page.setSubmittedCredentials(submitted, username, password, url, oldCredentials, tab.id);
+};
diff --git a/keepassxc-browser/bootstrap/bootstrap.min.css b/keepassxc-browser/bootstrap/bootstrap.min.css
index 86b6845..613d28a 100644
--- a/keepassxc-browser/bootstrap/bootstrap.min.css
+++ b/keepassxc-browser/bootstrap/bootstrap.min.css
@@ -4,4 +4,3 @@
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  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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\ No newline at end of file
diff --git a/keepassxc-browser/content/autocomplete.js b/keepassxc-browser/content/autocomplete.js
index a580e2b..527faf4 100644
--- a/keepassxc-browser/content/autocomplete.js
+++ b/keepassxc-browser/content/autocomplete.js
@@ -9,7 +9,7 @@ kpxcAutocomplete.input = undefined;
 kpxcAutocomplete.shadowRoot = undefined;
 kpxcAutocomplete.wrapper = undefined;
 
-kpxcAutocomplete.create = function(input, showListInstantly = false, autoSubmit = false) {
+kpxcAutocomplete.create = async function(input, showListInstantly = false, autoSubmit = false) {
     if (input.readOnly) {
         return;
     }
@@ -63,22 +63,20 @@ kpxcAutocomplete.showList = function(inputField) {
         item.textContent += c.label;
         const itemInput = kpxcUI.createElement('input', '', { 'type': 'hidden', 'value': c.value });
         item.append(itemInput);
-        item.addEventListener('click', function(e) {
+
+        item.addEventListener('click', async function(e) {
             if (!e.isTrusted) {
                 return;
             }
 
             // Save index for combination.loginId
             const index = Array.prototype.indexOf.call(e.currentTarget.parentElement.childNodes, e.currentTarget);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: index
-            });
+            await sendMessage('page_set_login_id', index);
 
-            inputField.value = this.getElementsByTagName('input')[0].value;
-            kpxcAutocomplete.fillPassword(inputField.value, index);
+            const usernameValue = this.getElementsByTagName('input')[0].value;
+            await kpxcAutocomplete.fillPassword(usernameValue, index, c.uuid);
             kpxcAutocomplete.closeList();
             inputField.focus();
-            document.body.removeChild(wrapper);
         });
 
         // These events prevent the double hover effect if both keyboard and mouse are used
@@ -87,6 +85,7 @@ kpxcAutocomplete.showList = function(inputField) {
             item.classList.add('kpxcAutocomplete-active');
             kpxcAutocomplete.index = Array.from(div.childNodes).indexOf(item);
         });
+
         item.addEventListener('mouseout', function(e) {
             item.classList.remove('kpxcAutocomplete-active');
         });
@@ -153,6 +152,7 @@ kpxcAutocomplete.getAllItems = function() {
     if (!list) {
         return [];
     }
+
     return list.getElementsByTagName('div');
 };
 
@@ -189,7 +189,7 @@ kpxcAutocomplete.keyPress = function(e) {
 
         if (kpxcAutocomplete.index >= 0 && items && items[kpxcAutocomplete.index] !== undefined) {
             e.preventDefault();
-            kpxcAutocomplete.input.value = e.currentTarget.value;
+            kpxcAutocomplete.input.value = kpxcAutocomplete.elements[kpxcAutocomplete.index].value;
             kpxcAutocomplete.fillPassword(kpxcAutocomplete.input.value, kpxcAutocomplete.index);
             kpxcAutocomplete.closeList();
         }
@@ -212,15 +212,12 @@ kpxcAutocomplete.keyPress = function(e) {
     }
 };
 
-kpxcAutocomplete.fillPassword = async function(value, index) {
-    const fieldId = kpxcAutocomplete.input.getAttribute('data-kpxc-id');
-    kpxcFields.prepareId(fieldId);
-
-    const givenType = kpxcAutocomplete.input.type === 'password' ? 'password' : 'username';
-    const combination = await kpxcFields.getCombination(givenType, fieldId);
+kpxcAutocomplete.fillPassword = async function(value, index, uuid) {
+    const combination = await kpxcFields.getCombination(kpxcAutocomplete.input);
     combination.loginId = index;
 
-    kpxc.fillInCredentials(combination, givenType === 'password', false);
+    const manualFill = await sendMessage('page_get_manual_fill');
+    await kpxc.fillInCredentials(combination, value, uuid, manualFill === ManualFill.PASSWORD);
     kpxcAutocomplete.input.setAttribute('fetched', true);
 };
 
@@ -232,12 +229,10 @@ kpxcAutocomplete.updatePosition = function(inputField, elem) {
 
     const rect = inputField.getBoundingClientRect();
     div.style.minWidth = Pixels(inputField.offsetWidth);
-    const bodyRect = document.body.getBoundingClientRect();
-    const bodyStyle = getComputedStyle(document.body);
 
-    if (bodyStyle.position.toLowerCase() === 'relative') {
-        div.style.top = Pixels(rect.top - bodyRect.top + document.scrollingElement.scrollTop + inputField.offsetHeight);
-        div.style.left = Pixels(rect.left - bodyRect.left + document.scrollingElement.scrollLeft);
+    if (kpxcUI.bodyStyle.position.toLowerCase() === 'relative') {
+        div.style.top = Pixels(rect.top - kpxcUI.bodyRect.top + document.scrollingElement.scrollTop + inputField.offsetHeight);
+        div.style.left = Pixels(rect.left - kpxcUI.bodyRect.left + document.scrollingElement.scrollLeft);
     } else {
         div.style.top = Pixels(rect.top + document.scrollingElement.scrollTop + inputField.offsetHeight);
         div.style.left = Pixels(rect.left + document.scrollingElement.scrollLeft);
diff --git a/keepassxc-browser/content/banner.js b/keepassxc-browser/content/banner.js
index 0cf3b0d..eff2f3a 100644
--- a/keepassxc-browser/content/banner.js
+++ b/keepassxc-browser/content/banner.js
@@ -8,7 +8,7 @@ kpxcBanner.created = false;
 kpxcBanner.credentials = {};
 kpxcBanner.wrapper = undefined;
 
-kpxcBanner.destroy = function() {
+kpxcBanner.destroy = async function() {
     kpxcBanner.created = false;
     kpxcBanner.credentials = {};
 
@@ -17,9 +17,7 @@ kpxcBanner.destroy = function() {
         kpxcBanner.banner.removeChild(dialog);
     }
 
-    browser.runtime.sendMessage({
-        action: 'remove_credentials_from_tab_information'
-    });
+    await sendMessage('remove_credentials_from_tab_information');
 
     if (kpxcBanner.wrapper && window.parent.document.body.contains(kpxcBanner.wrapper)) {
         window.parent.document.body.removeChild(kpxcBanner.wrapper);
@@ -29,23 +27,20 @@ kpxcBanner.destroy = function() {
 };
 
 kpxcBanner.create = async function(credentials = {}) {
-    const connectedDatabase = await browser.runtime.sendMessage({
-        action: 'get_connected_database'
-    });
-
+    const connectedDatabase = await sendMessage('get_connected_database');
     if (!kpxc.settings.showLoginNotifications || kpxcBanner.created || connectedDatabase.identifier === null) {
         return;
     }
 
     // Check if database is closed
-    const state = await browser.runtime.sendMessage({ action: 'check_database_hash' });
+    const state = await sendMessage('check_database_hash');
     if (state === '') {
         //kpxcUI.createNotification('error', tr('rememberErrorDatabaseClosed'));
         return;
     }
 
     // Don't show anything if the site is in the ignore
-    if (kpxc.siteIgnored(IGNORE_NORMAL)) {
+    if (await kpxc.siteIgnored(IGNORE_NORMAL)) {
         return;
     }
 
@@ -141,64 +136,48 @@ kpxcBanner.create = async function(credentials = {}) {
 };
 
 kpxcBanner.saveNewCredentials = async function(credentials = {}) {
-    const result = await browser.runtime.sendMessage({
-        action: 'get_database_groups'
-    });
+    const result = await sendMessage('get_database_groups');
+    if (!result || !result.groups) {
+        console.log('Error: Empty result from get_database_groups');
+        return;
+    }
+
+    if (!result.defaultGroupAlwaysAsk) {
+        if (result.defaultGroup === '' || result.defaultGroup === DEFAULT_BROWSER_GROUP) {
+             // Default group is used
+             const args = [ credentials.username, credentials.password, credentials.url ];
+             const res = await sendMessage('add_credentials', args);
+             kpxcBanner.verifyResult(res);
+             return;
+        } else {
+            // A specified group is used
+            let gname = '';
+            let guuid = '';
 
-    if (!result.defaultGroupAlwaysAsk && (result.defaultGroup !== '' && result.defaultGroup !== DEFAULT_BROWSER_GROUP)) {
-        // Another group name has been specified
-        const [ gname, guuid ] = kpxcBanner.getDefaultGroup(result.groups[0].children, result.defaultGroup);
-        if (gname === '' && guuid === '') {
-            // Root group is used -> use the root path
             if (result.defaultGroup.toLowerCase() === 'root') {
                 result.defaultGroup = '/';
-            }
-
-            // Create a new group
-            const newGroup = await browser.runtime.sendMessage({
-                action: 'create_new_group',
-                args: [ result.defaultGroup ]
-            });
-
-            if (newGroup.name && newGroup.uuid) {
-                const res = await browser.runtime.sendMessage({
-                    action: 'add_credentials',
-                    args: [ credentials.username, credentials.password, credentials.url, newGroup.name, newGroup.uuid ]
-                });
-                kpxcBanner.verifyResult(res);
+                gname = result.groups[0].name;
+                guuid = result.groups[0].uuid;
             } else {
-                kpxcUI.createNotification('error', tr('rememberErrorCreatingNewGroup'));
+                [ gname, guuid ] = kpxcBanner.getDefaultGroup(result.groups[0].children, result.defaultGroup);
+                if (gname === '' && guuid === '') {
+                    // Create a new group
+                    const newGroup = await sendMessage('create_new_group', [ result.defaultGroup ]);
+                    if (newGroup.name && newGroup.uuid) {
+                        const res = await sendMessage('add_credentials', [ credentials.username, credentials.password, credentials.url, newGroup.name, newGroup.uuid ]);
+                        kpxcBanner.verifyResult(res);
+                    } else {
+                        kpxcUI.createNotification('error', tr('rememberErrorCreatingNewGroup'));
+                    }
+
+                    return;
+                }
             }
-            return;
-        }
 
-        const res = await browser.runtime.sendMessage({
-            action: 'add_credentials',
-            args: [ credentials.username, credentials.password, credentials.url, gname, guuid ]
-        });
-        kpxcBanner.verifyResult(res);
-        return;
-    } else if ((result.groups === undefined || (result.groups.length > 0 && result.groups[0].children.length === 0))
-        || (!result.defaultGroupAlwaysAsk && (result.defaultGroup === '' || result.defaultGroup === DEFAULT_BROWSER_GROUP))) {
-        // Only the Root group and no KeePassXC-Browser passwords -> save to default
-        // Or when default group is not set and defaultGroupAskAlways is disabled -> save to default
-        const args = [ credentials.username, credentials.password, credentials.url ];
-
-        // If root group is defined by the user, and there's no default browser group, save the credentials to the root group
-        if (result.groups !== undefined
-            && result.groups.length > 0
-            && result.groups[0].children.length === 0
-            && (result.defaultGroup.toLowerCase() === 'root'
-                || result.defaultGroup === '/')) {
-            args.push(result.groups[0].name, result.groups[0].uuid);
+            const res = await sendMessage('add_credentials', [ credentials.username, credentials.password, credentials.url, gname, guuid ]);
+            kpxcBanner.verifyResult(res);
+            return;
         }
-
-        const res = await browser.runtime.sendMessage({
-            action: 'add_credentials',
-            args: args
-        });
-        kpxcBanner.verifyResult(res);
-        return;
     }
 
     const addChildren = function(group, parentElement, depth) {
@@ -227,11 +206,7 @@ kpxcBanner.saveNewCredentials = async function(credentials = {}) {
                 return;
             }
 
-            const res = await browser.runtime.sendMessage({
-                action: 'add_credentials',
-                args: [ credentials.username, credentials.password, credentials.url, group, groupUuid ]
-            });
-
+            const res = await sendMessage('add_credentials', [ credentials.username, credentials.password, credentials.url, group, groupUuid ]);
             kpxcBanner.verifyResult(res);
         });
 
@@ -264,10 +239,7 @@ kpxcBanner.updateCredentials = async function(credentials = {}) {
             credentials.username = credentials.list[0].login;
         }
 
-        const res = await browser.runtime.sendMessage({
-            action: 'update_credentials',
-            args: [ credentials.list[0].uuid, credentials.username, credentials.password, credentials.url ]
-        });
+        const res = await sendMessage('update_credentials', [ credentials.list[0].uuid, credentials.username, credentials.password, credentials.url ]);
         kpxcBanner.verifyResult(res);
     } else {
         await kpxcBanner.createCredentialDialog();
@@ -310,10 +282,7 @@ kpxcBanner.updateCredentials = async function(credentials = {}) {
                         return;
                     }
 
-                    const res = await browser.runtime.sendMessage({
-                        action: 'update_credentials',
-                        args: [ credentials.list[entryId].uuid, credentials.username, credentials.password, credentials.url ]
-                    });
+                    const res = await sendMessage('update_credentials', [ credentials.list[entryId].uuid, credentials.username, credentials.password, credentials.url ]);
                     kpxcBanner.verifyResult(res);
                 });
             });
@@ -369,9 +338,7 @@ kpxcBanner.createCredentialDialog = async function() {
     kpxcBanner.shadowSelector('#kpxc-banner-btn-update').hidden = true;
     kpxcBanner.shadowSelector('.kpxc-checkbox').disabled = true;
 
-    const connectedDatabase = await browser.runtime.sendMessage({
-        action: 'get_connected_database'
-    });
+    const connectedDatabase = await sendMessage('get_connected_database');
     const databaseName = connectedDatabase.count > 0 ? connectedDatabase.identifier : '';
 
     const dialog = kpxcUI.createElement('div', 'kpxc-banner-dialog');
diff --git a/keepassxc-browser/content/define.js b/keepassxc-browser/content/define.js
index de78d1d..196efa8 100644
--- a/keepassxc-browser/content/define.js
+++ b/keepassxc-browser/content/define.js
@@ -8,15 +8,18 @@ kpxcDefine.selection = {
     totp: null,
     fields: []
 };
-kpxcDefine.eventFieldClick = null;
+
 kpxcDefine.dialog = null;
-kpxcDefine.startPosX = 0;
-kpxcDefine.startPosY = 0;
 kpxcDefine.diffX = 0;
 kpxcDefine.diffY = 0;
+kpxcDefine.eventFieldClick = null;
+kpxcDefine.inputQueryPattern = 'input[type=\'text\'], input[type=\'email\'], input[type=\'password\'], input[type=\'tel\'], input[type=\'number\'], input[type=\'username\'], input:not([type])';
+kpxcDefine.markedFields= [];
 kpxcDefine.keyDown = null;
+kpxcDefine.startPosX = 0;
+kpxcDefine.startPosY = 0;
 
-kpxcDefine.init = function() {
+kpxcDefine.init = async function() {
     const backdrop = kpxcUI.createElement('div', 'kpxcDefine-modal-backdrop', { 'id': 'kpxcDefine-backdrop' });
     const chooser = kpxcUI.createElement('div', '', { 'id': 'kpxcDefine-fields' });
     const description = kpxcUI.createElement('div', '', { 'id': 'kpxcDefine-description' });
@@ -25,9 +28,6 @@ kpxcDefine.init = function() {
     document.body.append(backdrop);
     document.body.append(chooser);
 
-    kpxcFields.getAllFields();
-    kpxcFields.prepareVisibleFieldsWithID('select');
-
     kpxcDefine.initDescription();
     kpxcDefine.resetSelection();
     kpxcDefine.prepareStep1();
@@ -117,21 +117,24 @@ kpxcDefine.resetSelection = function() {
         fields: []
     };
 
+    kpxcDefine.markedFields = [];
+
     const fields = $('#kpxcDefine-fields');
     if (fields) {
         fields.textContent = '';
     }
 };
 
-kpxcDefine.isFieldSelected = function(kpxcId) {
-    if (kpxcId) {
+kpxcDefine.isFieldSelected = function(field) {
+    if (kpxcDefine.markedFields.some(f => f === field)) {
         return (
-            kpxcId === kpxcDefine.selection.username
-            || kpxcId === kpxcDefine.selection.password
-            || kpxcId === kpxcDefine.selection.totp
-            || kpxcId in kpxcDefine.selection.fields
+            (kpxcDefine.selection.username && kpxcDefine.selection.username.originalElement === field)
+            || (kpxcDefine.selection.password && kpxcDefine.selection.password.originalElement === field)
+            || (kpxcDefine.selection.totp && kpxcDefine.selection.totp.originalElement === field)
+            || kpxcDefine.selection.fields.includes(field)
         );
     }
+
     return false;
 };
 
@@ -142,35 +145,37 @@ kpxcDefine.markAllUsernameFields = function(chooser) {
         }
 
         const field = elem || e.currentTarget;
-        kpxcDefine.selection.username = field.getAttribute('data-kpxc-id');
         field.classList.add('kpxcDefine-fixed-username-field');
         field.textContent = tr('username');
         field.onclick = null;
+        kpxcDefine.selection.username = field;
+        kpxcDefine.markedFields.push(field.originalElement);
+
         kpxcDefine.prepareStep2();
         kpxcDefine.markAllPasswordFields('#kpxcDefine-fields');
     };
-    kpxcDefine.markFields(chooser, kpxcFields.inputQueryPattern);
+
+    kpxcDefine.markFields(chooser, kpxcDefine.inputQueryPattern);
 };
 
-kpxcDefine.markAllPasswordFields = function(chooser, more = false) {
+kpxcDefine.markAllPasswordFields = function(chooser) {
     kpxcDefine.eventFieldClick = function(e, elem) {
         if (!e.isTrusted) {
             return;
         }
 
         const field = elem || e.currentTarget;
-        kpxcDefine.selection.password = field.getAttribute('data-kpxc-id');
         field.classList.add('kpxcDefine-fixed-password-field');
         field.textContent = tr('password');
         field.onclick = null;
+        kpxcDefine.selection.password = field;
+        kpxcDefine.markedFields.push(field.originalElement);
+
         kpxcDefine.prepareStep3();
         kpxcDefine.markAllTOTPFields('#kpxcDefine-fields');
     };
-    if (more) {
-        kpxcDefine.markFields(chooser, kpxcFields.inputQueryPattern);
-    } else {
-        kpxcDefine.markFields(chooser, 'input[type=\'password\']');
-    }
+
+    kpxcDefine.markFields(chooser, 'input[type=\'password\']');
 };
 
 kpxcDefine.markAllStringFields = function(chooser) {
@@ -180,15 +185,19 @@ kpxcDefine.markAllStringFields = function(chooser) {
         }
 
         const field = elem || e.currentTarget;
-        const value = field.getAttribute('data-kpxc-id');
-        kpxcDefine.selection.fields[value] = true;
+        if (kpxcDefine.isFieldSelected(field.originalElement)) {
+            return;
+        }
+
+        kpxcDefine.selection.fields.push(field.originalElement);
+        kpxcDefine.markedFields.push(field.originalElement);
 
-        const count = Object.keys(kpxcDefine.selection.fields).length;
         field.classList.add('kpxcDefine-fixed-string-field');
-        field.textContent = tr('defineStringField') + String(count);
+        field.textContent = tr('defineStringField') + String(kpxcDefine.selection.fields.length);
         field.onclick = null;
     };
-    kpxcDefine.markFields(chooser, kpxcFields.inputQueryPattern + ', select');
+
+    kpxcDefine.markFields(chooser, kpxcDefine.inputQueryPattern + ', select');
 };
 
 kpxcDefine.markAllTOTPFields = function(chooser) {
@@ -198,14 +207,17 @@ kpxcDefine.markAllTOTPFields = function(chooser) {
         }
 
         const field = elem || e.currentTarget;
-        kpxcDefine.selection.totp = field.getAttribute('data-kpxc-id');
         field.classList.add('kpxcDefine-fixed-totp-field');
         field.textContent = 'TOTP';
         field.onclick = null;
+        kpxcDefine.selection.totp = field;
+        kpxcDefine.markedFields.push(field.originalElement);
+
         kpxcDefine.prepareStep4();
         kpxcDefine.markAllStringFields('#kpxcDefine-fields');
     };
-    kpxcDefine.markFields(chooser, kpxcFields.inputQueryPattern);
+
+    kpxcDefine.markFields(chooser, kpxcDefine.inputQueryPattern);
 };
 
 kpxcDefine.markFields = function(chooser, pattern) {
@@ -214,39 +226,49 @@ kpxcDefine.markFields = function(chooser, pattern) {
     const inputs = document.querySelectorAll(pattern);
 
     for (const i of inputs) {
-        if (kpxcDefine.isFieldSelected(i.getAttribute('data-kpxc-id'))) {
+        if (kpxcDefine.isFieldSelected(i)) {
+            continue;
+        }
+
+        if (!kpxcFields.isVisible(i)) {
             continue;
         }
 
-        if (kpxcFields.isVisible(i)) {
-            const field = kpxcUI.createElement('div', 'kpxcDefine-fixed-field', { 'data-kpxc-id': i.getAttribute('data-kpxc-id') });
-            const rect = i.getBoundingClientRect();
-            field.style.top = Pixels(rect.top);
-            field.style.left = Pixels(rect.left);
-            field.style.width = Pixels(rect.width);
-            field.style.height = Pixels(rect.height);
-            field.textContent = String(index);
-            field.addEventListener('click', function(e) {
-                kpxcDefine.eventFieldClick(e);
-            });
-            field.addEventListener('mouseenter', function() {
-                field.classList.add('kpxcDefine-fixed-hover-field');
-            });
-            field.addEventListener('mouseleave', function() {
-                field.classList.remove('kpxcDefine-fixed-hover-field');
-            });
-            i.addEventListener('focus', function() {
-                field.classList.add('kpxcDefine-fixed-hover-field');
-            });
-            i.addEventListener('blur', function() {
-                field.classList.remove('kpxcDefine-fixed-hover-field');
-            });
-            const elem = $(chooser);
-            if (elem) {
-                elem.append(field);
-                firstInput = field;
-                ++index;
-            }
+        const field = kpxcUI.createElement('div', 'kpxcDefine-fixed-field');
+        field.originalElement = i;
+
+        const rect = i.getBoundingClientRect();
+        field.style.top = Pixels(rect.top);
+        field.style.left = Pixels(rect.left);
+        field.style.width = Pixels(rect.width);
+        field.style.height = Pixels(rect.height);
+        field.textContent = String(index);
+
+        field.addEventListener('click', function(e) {
+            kpxcDefine.eventFieldClick(e);
+        });
+
+        field.addEventListener('mouseenter', function() {
+            field.classList.add('kpxcDefine-fixed-hover-field');
+        });
+
+        field.addEventListener('mouseleave', function() {
+            field.classList.remove('kpxcDefine-fixed-hover-field');
+        });
+
+        i.addEventListener('focus', function() {
+            field.classList.add('kpxcDefine-fixed-hover-field');
+        });
+
+        i.addEventListener('blur', function() {
+            field.classList.remove('kpxcDefine-fixed-hover-field');
+        });
+
+        const elem = $(chooser);
+        if (elem) {
+            elem.append(field);
+            firstInput = field;
+            ++index;
         }
     }
 
@@ -298,7 +320,7 @@ kpxcDefine.prepareStep4 = function() {
     $('#kpxcDefine-help').style.marginBottom = '10px';
     $('#kpxcDefine-help').textContent = tr('defineHelpText');
 
-    removeContent('div.kpxcDefine-fixed-field:not(.kpxcDefine-fixed-username-field):not(.kpxcDefine-fixed-password-field):not(.kpxcDefine-fixed-totp-field)');
+    removeContent('div.kpxcDefine-fixed-field:not(.kpxcDefine-fixed-username-field):not(.kpxcDefine-fixed-password-field):not(.kpxcDefine-fixed-totp-field):not(.kpxcDefine-fixed-string-field)');
     $('#kpxcDefine-chooser-headline').textContent = tr('defineConfirmSelection');
     kpxcDefine.dataStep = 4;
     $('#kpxcDefine-btn-skip').style.display = 'none';
@@ -330,10 +352,17 @@ kpxcDefine.again = function() {
 };
 
 kpxcDefine.more = function() {
-    if (kpxcDefine.dataStep === 2) {
+    if (kpxcDefine.dataStep === 1) {
+        kpxcDefine.prepareStep1();
+    } else if (kpxcDefine.dataStep === 2) {
         kpxcDefine.prepareStep2();
-        kpxcDefine.markAllPasswordFields('#kpxcDefine-fields', true);
+    } else if (kpxcDefine.dataStep === 3) {
+        kpxcDefine.prepareStep3();
+    } else if (kpxcDefine.dataStep === 4) {
+        kpxcDefine.prepareStep4();
     }
+
+    kpxcDefine.markFields('#kpxcDefine-fields', kpxcDefine.inputQueryPattern + ', select');
 };
 
 kpxcDefine.confirm = async function() {
@@ -346,21 +375,20 @@ kpxcDefine.confirm = async function() {
     }
 
     if (kpxcDefine.selection.username) {
-        kpxcDefine.selection.username = kpxcFields.prepareId(kpxcDefine.selection.username);
+        kpxcDefine.selection.username = kpxcFields.getId(kpxcDefine.selection.username.originalElement);
     }
 
     if (kpxcDefine.selection.password) {
-        kpxcDefine.selection.password = kpxcFields.prepareId(kpxcDefine.selection.password);
+        kpxcDefine.selection.password = kpxcFields.getId(kpxcDefine.selection.password.originalElement);
     }
 
     if (kpxcDefine.selection.totp) {
-        kpxcDefine.selection.totp = kpxcFields.prepareId(kpxcDefine.selection.totp);
+        kpxcDefine.selection.totp = kpxcFields.getId(kpxcDefine.selection.totp.originalElement);
     }
 
     const fieldIds = [];
-    const fieldKeys = Object.keys(kpxcDefine.selection.fields);
-    for (const i of fieldKeys) {
-        fieldIds.push(kpxcFields.prepareId(i));
+    for (const i of kpxcDefine.selection.fields) {
+        fieldIds.push(kpxcFields.getId(i));
     }
 
     const location = kpxc.getDocumentLocation();
@@ -371,11 +399,7 @@ kpxcDefine.confirm = async function() {
         fields: fieldIds
     };
 
-    await browser.runtime.sendMessage({
-        action: 'save_settings',
-        args: [ kpxc.settings ]
-    });
-
+    await sendMessage('save_settings', kpxc.settings);
     kpxcDefine.close();
 };
 
@@ -387,19 +411,13 @@ kpxcDefine.discard = async function() {
     const location = kpxc.getDocumentLocation();
     delete kpxc.settings['defined-custom-fields'][location];
 
-    await browser.runtime.sendMessage({
-        action: 'save_settings',
-        args: [ kpxc.settings ]
-    });
-
-    await browser.runtime.sendMessage({
-        action: 'load_settings'
-    });
+    await sendMessage('save_settings', kpxc.settings);
+    await sendMessage('load_settings');
 
     $('div.alreadySelected').remove();
 };
 
-// Handle the keyboard events
+// Handle keyboard events
 kpxcDefine.keyDown = function(e) {
     if (!e.isTrusted) {
         return;
@@ -413,7 +431,7 @@ kpxcDefine.keyDown = function(e) {
         // Select input field by number
         e.preventDefault();
         const index = e.keyCode - 48;
-        const inputFields = document.querySelectorAll('div.kpxcDefine-fixed-field:not(.kpxcDefine-fixed-username-field):not(.kpxcDefine-fixed-password-field)');
+        const inputFields = document.querySelectorAll('div.kpxcDefine-fixed-field:not(.kpxcDefine-fixed-username-field):not(.kpxcDefine-fixed-password-field):not(.kpxcDefine-fixed-totp-field)');
 
         if (inputFields.length >= index) {
             kpxcDefine.eventFieldClick(e, inputFields[index - 1]);
diff --git a/keepassxc-browser/content/keepassxc-browser.js b/keepassxc-browser/content/keepassxc-browser.js
index 489cf79..353753b 100755
--- a/keepassxc-browser/content/keepassxc-browser.js
+++ b/keepassxc-browser/content/keepassxc-browser.js
@@ -1,144 +1,223 @@
 'use strict';
 
-const ManualFill = {
-    NONE: 0,
-    PASS: 1,
-    BOTH: 2
-};
-
-const DatabaseState = {
-    DISCONNECTED: 0,
-    LOCKED: 1,
-    UNLOCKED: 2
-};
-
-const acceptedOTPFields = [
-    '2fa',
-    'auth',
-    'challenge',
-    'code',
-    'mfa',
-    'otp',
-    'token'
-];
+const _maximumInputs = 100;
+const _maximumMutations = 200;
 
 // Contains already called method names
 const _called = {};
-_called.retrieveCredentials = false;
 _called.clearLogins = false;
-_called.manualFillRequested = ManualFill.NONE;
-let _singleInputEnabledForPage = false;
-let _databaseState = DatabaseState.DISCONNECTED;
-const _maximumInputs = 100;
-const _maximumMutations = 200;
+_called.retrieveCredentials = false;
 
-// Count of detected form fields on the page
-var _detectedFields = 0;
+// Wrapper
+const sendMessage = async function(action, args) {
+    return await browser.runtime.sendMessage({ action: action, args: args });
+};
+
+/**
+ * @Object kpxcIcons
+ * Icon handling.
+ */
+const kpxcIcons = {};
+kpxcIcons.icons = [];
+kpxcIcons.iconTypes = { USERNAME: 0, PASSWORD: 1, TOTP: 2 };
 
-// Element id's containing input fields detected by MutationObserver
-const _observerIds = [];
+// Adds an icon to input field
+kpxcIcons.addIcon = async function(field, iconType) {
+    if (!field || iconType < 0 || iconType > 2) {
+        return;
+    }
 
-// Document URL
-let _documentURL = document.location.href;
+    let iconSet = false;
+    if (iconType === kpxcIcons.iconTypes.USERNAME && kpxcUsernameIcons.isValid(field)) {
+        kpxcUsernameIcons.newIcon(field, kpxc.databaseState);
+        iconSet = true;
+    } else if (iconType === kpxcIcons.iconTypes.PASSWORD && kpxcPasswordIcons.isValid(field)) {
+        kpxcPasswordIcons.newIcon(field, kpxc.databaseState);
+        iconSet = true;
+    } else if (iconType === kpxcIcons.iconTypes.TOTP && kpxcTOTPIcons.isValid(field)) {
+        kpxcTOTPIcons.newIcon(field, kpxc.databaseState);
+        iconSet = true;
+    }
 
-// These are executed in each frame
-browser.runtime.onMessage.addListener(async function(req, sender) {
-    if ('action' in req) {
-        // Don't allow any actions if the site is ignored
-        if (kpxc.siteIgnored()) {
-            return Promise.resolve();
+    if (iconSet) {
+        kpxcIcons.icons.push({
+            field: field,
+            iconType: iconType
+        });
+    }
+};
+
+// Adds all necessary icons to a saved form
+kpxcIcons.addIconsFromForm = async function(form) {
+    const addUsernameIcons = async function(c) {
+        if (kpxc.settings.showLoginFormIcon && await kpxc.passwordFilled() === false) {
+            // Special case where everything else has been hidden, but a single password field is now displayed.
+            // For example PayPal and Amazon is handled like this.
+            if (c.username && !c.password && c.passwordInputs.length === 1) {
+                kpxcIcons.addIcon(c.passwordInputs[0], kpxcIcons.iconTypes.USERNAME);
+            }
+
+            if (c.username && !c.username.readOnly) {
+                kpxcIcons.addIcon(c.username, kpxcIcons.iconTypes.USERNAME);
+            } else if (c.password && (!c.username || (c.username && c.username.readOnly))) {
+                // Single password field
+                kpxcIcons.addIcon(c.password, kpxcIcons.iconTypes.USERNAME);
+            }
         }
+    };
 
-        if (req.action === 'fill_user_pass_with_specific_login') {
-            kpxc.fillWithSpecificLogin(req.id);
-        } else if (req.action === 'fill_username_password') {
-            _called.manualFillRequested = ManualFill.BOTH;
-            await kpxc.receiveCredentialsIfNecessary();
-            kpxc.fillInFromActiveElement(false);
-        } else if (req.action === 'fill_password') {
-            _called.manualFillRequested = ManualFill.PASS;
-            await kpxc.receiveCredentialsIfNecessary();
-            kpxc.fillInFromActiveElement(false, true); // passOnly to true
-        } else if (req.action === 'fill_totp') {
-            await kpxc.receiveCredentialsIfNecessary();
-            kpxc.fillInFromActiveElementTOTPOnly();
-        } else if (req.action === 'clear_credentials') {
-            kpxcEvents.clearCredentials();
-            return Promise.resolve();
-        } else if (req.action === 'activated_tab') {
-            kpxcEvents.triggerActivatedTab();
-            return Promise.resolve();
-        } else if (req.action === 'ignore_site') {
-            kpxc.ignoreSite(req.args);
-        } else if (req.action === 'check_database_hash' && 'hash' in req) {
-            kpxc.detectDatabaseChange(req);
-        } else if (req.action === 'remember_credentials') {
-            kpxc.contextMenuRememberCredentials();
-        } else if (req.action === 'choose_credential_fields') {
-            kpxcDefine.init();
-        } else if (req.action === 'redetect_fields') {
-            const response = await browser.runtime.sendMessage({
-                action: 'load_settings'
-            });
-            kpxc.settings = response;
-            kpxc.initCredentialFields(true);
-        } else if (req.action === 'show_password_generator') {
-            kpxcPasswordDialog.trigger();
-        } else if (req.action === 'add_username_only_option') {
-            kpxc.addToSitePreferences();
+    const addPasswordIcons = async function(c) {
+        // Show password icons also with forms without any username field
+        if (kpxc.settings.usePasswordGeneratorIcons
+            && ((c.username && c.password) || (!c.username && c.passwordInputs.length > 0))) {
+            for (const input of c.passwordInputs) {
+                kpxcIcons.addIcon(input, kpxcIcons.iconTypes.PASSWORD);
+            }
+        }
+    };
+
+    const addTOTPIcons = async function(c) {
+        if (c.totp && kpxc.settings.showOTPIcon) {
+            kpxcIcons.addIcon(c.totp, kpxcIcons.iconTypes.TOTP);
         }
+    };
+
+    await Promise.all([
+        await addUsernameIcons(form),
+        await addPasswordIcons(form),
+        await addTOTPIcons(form)
+    ]);
+};
+
+// Delete all icons that have been hidden from the page view
+kpxcIcons.deleteHiddenIcons = function() {
+    kpxcUsernameIcons.deleteHiddenIcons();
+    kpxcPasswordIcons.deleteHiddenIcons();
+    kpxcTOTPIcons.deleteHiddenIcons();
+};
+
+// Initializes all icons needed to be shown
+kpxcIcons.initIcons = async function(combinations = []) {
+    if (combinations.length === 0) {
+        return;
     }
-});
 
-function _f(fieldId) {
-    const inputs = document.querySelectorAll(`input[data-kpxc-id='${fieldId}']`);
-    return inputs.length > 0 ? inputs[0] : null;
-}
+    for (const form of kpxcForm.savedForms) {
+        await kpxcIcons.addIconsFromForm(form);
+    }
 
-function _fs(fieldId) {
-    const inputs = document.querySelectorAll(`input[data-kpxc-id='${fieldId}'], select[data-kpxc-id='${fieldId}']`);
-    return inputs.length > 0 ? inputs[0] : null;
-}
+    // Check for other combinations that are not in any form
+    for (const c of combinations) {
+        if (c.form) {
+            continue;
+        }
 
+        await kpxcIcons.addIconsFromForm(c);
+    }
+};
+
+kpxcIcons.hasIcon = function(field) {
+    return !field ? false : kpxcIcons.icons.some(i => i.field === field);
+};
 
+// Sets the icons to corresponding database lock status
+kpxcIcons.switchIcons = function() {
+    kpxcUsernameIcons.switchIcon(kpxc.databaseState);
+    kpxcPasswordIcons.switchIcon(kpxc.databaseState);
+    kpxcTOTPIcons.switchIcon(kpxc.databaseState);
+};
+
+
+/**
+ * @Object kpxcForm
+ * Identifies form submits and password changes.
+ */
 const kpxcForm = {};
-kpxcForm.passwordInputs = [];
+kpxcForm.formButtonQuery = 'button[type=\'button\'], button[type=\'submit\'], input[type=\'button\'], button:not([type]), div[role=\'button\']';
+kpxcForm.savedForms = [];
 
-kpxcForm.init = function(form, credentialFields) {
-    if (!form.getAttribute('kpxcForm-initialized') && (credentialFields.password || credentialFields.username)) {
-        form.setAttribute('kpxcForm-initialized', true);
-        kpxcForm.setInputFields(form, credentialFields);
-        form.addEventListener('submit', kpxcForm.onSubmit);
+// Returns true if form has been already saved
+kpxcForm.formIdentified = function(form) {
+    return kpxcForm.savedForms.some(f => f.form === form);
+};
 
-        const submitButton = kpxc.getFormSubmitButton(form);
-        if (submitButton !== undefined) {
-            submitButton.addEventListener('click', kpxcForm.onSubmit);
+// Return input fields from our Object array
+kpxcForm.getCredentialFieldsFromForm = function(form) {
+    for (const savedForm of kpxcForm.savedForms) {
+        if (savedForm.form === form) {
+            return [ savedForm.username, savedForm.password, savedForm.passwordInputs, savedForm.totp ];
         }
     }
+
+    return [];
 };
 
-kpxcForm.destroy = function(form, credentialFields) {
-    if (form === false && credentialFields) {
-        const field = _f(credentialFields.password) || _f(credentialFields.username);
-        if (field) {
-            form = kpxc.getForm(field);
-            if (form && form.length > 0) {
-                form.removeEventListener('submit', kpxcForm.onSubmit);
+// Get the form submit button instead if action URL is same as the page itself
+kpxcForm.getFormSubmitButton = function(form) {
+    const action = kpxc.submitUrl || form.action;
+    if (action.includes(document.location.origin + document.location.pathname)) {
+        for (const i of form.elements) {
+            if (i.type === 'submit') {
+                return i;
             }
         }
     }
 
-    kpxcForm.passwordInputs = [];
+    // Try to find another button. Select the first one.
+    const buttons = Array.from(form.querySelectorAll(kpxcForm.formButtonQuery));
+    if (buttons.length > 0) {
+        return buttons[0];
+    }
+
+    // Try to find similar buttons outside the form which are added via 'form' property
+    for (const e of form.elements) {
+        if ((e.nodeName === 'BUTTON' && (e.type === 'button' || e.type === 'submit' || e.type === ''))
+            || (e.nodeName === 'INPUT' && e.type === 'button')) {
+            return e;
+        }
+    }
+
+    return undefined;
 };
 
-kpxcForm.setInputFields = function(form, credentialFields) {
-    form.setAttribute('kpxcUsername', credentialFields.username);
-    form.setAttribute('kpxcPassword', credentialFields.password);
+// Retrieve new password from a form with three elements: Current, New, Repeat New
+kpxcForm.getNewPassword = function(passwordInputs = []) {
+    if (passwordInputs.length < 2) {
+        return '';
+    }
 
-    // Save all the password input fields from the form
-    kpxcForm.passwordInputs = Array.from(form.elements).filter(e => e.nodeName === 'INPUT' && e.type === 'password');
+    // Just two password fields, current and new
+    if (passwordInputs.length === 2 && passwordInputs[0] !== passwordInputs[1]) {
+        return passwordInputs[1].value;
+    }
+
+    // Choose the last three password fields. The first ones are almost always for something else
+    const current = passwordInputs[passwordInputs.length - 3].value;
+    const newPass = passwordInputs[passwordInputs.length - 2].value;
+    const repeatNew = passwordInputs[passwordInputs.length - 1].value;
+
+    if ((newPass === repeatNew && current !== newPass && current !== repeatNew)
+        || (current === newPass && repeatNew !== newPass && repeatNew !== current)) {
+        return newPass;
+    }
+
+    return '';
 };
 
+// Initializes form and attaches the submit button to our own callback
+kpxcForm.init = function(form, credentialFields) {
+    if (!kpxcForm.formIdentified(form) && (credentialFields.password || credentialFields.username)) {
+        kpxcForm.saveForm(form, credentialFields);
+        form.addEventListener('submit', kpxcForm.onSubmit);
+
+        const submitButton = kpxcForm.getFormSubmitButton(form);
+        if (submitButton !== undefined) {
+            submitButton.addEventListener('click', kpxcForm.onSubmit);
+        }
+    }
+};
+
+// Triggers when form is submitted. Shows the credential banner
 kpxcForm.onSubmit = async function(e) {
     if (!e.isTrusted) {
         return;
@@ -156,10 +235,7 @@ kpxcForm.onSubmit = async function(e) {
         return;
     }
 
-    const usernameId = form.getAttribute('kpxcUsername');
-    const passwordId = form.getAttribute('kpxcPassword');
-    const usernameField = _f(usernameId);
-    const passwordField = _f(passwordId);
+    const [ usernameField, passwordField, passwordInputs ] = kpxcForm.getCredentialFieldsFromForm(form);
     let usernameValue = '';
     let passwordValue = '';
 
@@ -171,8 +247,8 @@ kpxcForm.onSubmit = async function(e) {
     }
 
     // Check if the form has three password fields -> a possible password change form
-    if (kpxcForm.passwordInputs.length >= 2) {
-        passwordValue = kpxcForm.getNewPassword();
+    if (passwordInputs && passwordInputs.length >= 2) {
+        passwordValue = kpxcForm.getNewPassword(passwordInputs);
     } else if (passwordField) {
         // Use the combination password field instead
         passwordValue = passwordField.value;
@@ -183,114 +259,181 @@ kpxcForm.onSubmit = async function(e) {
         return;
     }
 
-    browser.runtime.sendMessage({
-        action: 'page_set_submitted',
-        args: [ true, usernameValue, passwordValue, trimURL(window.top.location.href), kpxc.credentials ]
-    });
+    await kpxc.setPasswordFilled(true);
+    await sendMessage('page_set_submitted', [ true, usernameValue, passwordValue, trimURL(window.top.location.href), kpxc.credentials ]);
 
     // Show the banner if the page does not reload
     kpxc.rememberCredentials(usernameValue, passwordValue);
 };
 
-// Retrieve new password from a form with three elements: Current, New, Repeat New
-kpxcForm.getNewPassword = function() {
-    if (kpxcForm.passwordInputs.length < 2) {
-        return '';
-    }
+// Save form to Object array
+kpxcForm.saveForm = function(form, combination) {
+    kpxcForm.savedForms.push({
+        form: form,
+        username: combination.username,
+        password: combination.password,
+        totp: combination.totp,
+        passwordInputs: Array.from(form.elements).filter(e => e.nodeName === 'INPUT' && e.type === 'password')
+    });
+};
 
-    // Just two password fields, current and new
-    if (kpxcForm.passwordInputs.length === 2
-        && kpxcForm.passwordInputs[0] !== kpxcForm.passwordInputs[1]) {
-        return kpxcForm.passwordInputs[1].value;
+
+/**
+ * @Object kpxcFields
+ * Provides methods for input field handling.
+ */
+const kpxcFields = {};
+
+// Returns all username & password combinations detected from the inputs.
+// After username field is detected, first password field found after that will be saved as a combination.
+kpxcFields.getAllCombinations = async function(inputs) {
+    const combinations = [];
+    let usernameField = null;
+
+    for (const input of inputs) {
+        if (!input) {
+            continue;
+        }
+
+        if (input.getLowerCaseAttribute('type') === 'password') {
+            const combination = {
+                username: (!usernameField || usernameField.size < 1) ? null : usernameField,
+                password: input,
+                passwordInputs: [ input ],
+                form: input.form
+            };
+
+            combinations.push(combination);
+            usernameField = null;
+        } else if (kpxcTOTPIcons.isValid(input)) {
+            // Dynamically added TOTP field
+            const combination = {
+                username: null,
+                password: null,
+                passwordInputs: [],
+                totp: input,
+                form: null
+            };
+
+            combinations.push(combination);
+        } else {
+            usernameField = input;
+        }
     }
 
-    // Choose the last three password fields. The first ones are almost always for something else
-    const current = kpxcForm.passwordInputs[kpxcForm.passwordInputs.length - 3].value;
-    const newPass = kpxcForm.passwordInputs[kpxcForm.passwordInputs.length - 2].value;
-    const repeatNew = kpxcForm.passwordInputs[kpxcForm.passwordInputs.length - 1].value;
+    if (kpxc.singleInputEnabledForPage && combinations.length === 0 && usernameField) {
+        const combination = {
+            username: usernameField,
+            password: null,
+            passwordInputs: [],
+            form: usernameField.form
+        };
 
-    if (current !== newPass && newPass !== '' && newPass === repeatNew) {
-        return newPass;
-    } else if (current === newPass && repeatNew !== newPass) {
-        // Reverse form where current password is at the bottom
-        return repeatNew;
+        combinations.push(combination);
     }
 
-    return '';
+    return combinations;
 };
 
+// Return all input fields on the page, but ignore previously detected
+kpxcFields.getAllPageInputs = async function(previousInputs = []) {
+    const fields = [];
+    const inputs = kpxcObserverHelper.getInputs(document);
 
-const kpxcFields = {};
-kpxcFields.inputQueryPattern = 'input[type=\'text\'], input[type=\'email\'], input[type=\'password\'], input[type=\'tel\'], input[type=\'number\'], input[type=\'username\'], input:not([type])';
+    for (const input of inputs) {
+        // Ignore fields that are already detected
+        if (previousInputs.some(e => e === input)) {
+            continue;
+        }
 
-// copied from Sizzle.js
-kpxcFields.rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g;
-kpxcFields.fcssescape = function(ch, asCodePoint) {
-    if (asCodePoint) {
-        // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
-        if (ch === '\0') {
-            return '\uFFFD';
+        if (kpxcFields.isVisible(input) && !kpxcFields.isSearchField(input) && kpxcFields.isAutocompleteAppropriate(input)) {
+            fields.push(input);
         }
+    }
 
-        // Control characters and (dependent upon position) numbers get escaped as code points
-        return ch.slice(0, -1) + '\\' + ch.charCodeAt(ch.length - 1).toString(16) + ' ';
+    kpxc.detectedFields = previousInputs.length + fields.length;
+
+    // Show add username-only option for the site in popup
+    if (!kpxc.singleInputEnabledForPage
+        && ((fields.length === 1 && fields[0].getLowerCaseAttribute('type') !== 'password')
+        || (previousInputs.length === 1 && previousInputs[0].getLowerCaseAttribute('type') !== 'password'))) {
+        sendMessage('username_field_detected', true );
+    } else {
+        sendMessage('username_field_detected', false );
     }
 
-    // Other potentially-special ASCII characters get backslash-escaped
-    return '\\' + ch;
+    await kpxc.initCombinations(inputs);
+    return fields;
 };
 
-// Unique number as new IDs for input fields
-kpxcFields.uniqueNumber = 342845638;
-// Objects with combination of username + password fields
-kpxcFields.combinations = [];
-
-kpxcFields.setUniqueId = function(field) {
-    if (field && !field.getAttribute('data-kpxc-id')) {
-        // Use ID of field if it is unique
-        const fieldId = field.getAttribute('id');
-        if (fieldId) {
-            const foundIds = document.querySelectorAll('input#' + kpxcFields.prepareId(fieldId));
-            if (foundIds.length === 1) {
-                field.setAttribute('data-kpxc-id', fieldId);
-                return;
+/**
+ * Returns the combination where input field is used
+ * @param {HTMLElement} field Input field
+ * @param {String} givenType 'username' or 'password'
+ */
+kpxcFields.getCombination = async function(field, givenType) {
+    // If givenType is not set, return the combination that uses the selected field
+    for (const combination of kpxc.combinations) {
+        if (!givenType && Object.values(combination).find(c => c === field)) {
+            return combination;
+        } else if (givenType) {
+            if (combination[givenType] === field) {
+                return combination;
             }
         }
+    }
 
-        // Create own ID if no ID is set for this field
-        kpxcFields.uniqueNumber += 1;
-        field.setAttribute('data-kpxc-id', 'kpxcpw' + String(kpxcFields.uniqueNumber));
+    return undefined;
+};
+
+// Gets of generates an unique ID for the element
+kpxcFields.getId = function(target) {
+    if (target.classList.length > 0) {
+        return `${target.nodeName} ${target.type} ${target.classList.value}`;
+    }
+
+    if (target.id && target.id !== '') {
+        return `${target.nodeName} ${target.type} ${kpxcFields.prepareId(target.id)}`;
     }
+
+    return `kpxc ${target.type} ${target.clientTop}${target.clientLeft}${target.clientWidth}${target.clientHeight}${target.offsetTop}${target.offsetLeft}`;
 };
 
-kpxcFields.prepareId = function(id) {
-    return (id + '').replace(kpxcFields.rcssescape, kpxcFields.fcssescape);
+// Check for new password via autocomplete attribute
+kpxcFields.isAutocompleteAppropriate = function(field) {
+    const autocomplete = field.getLowerCaseAttribute('autocomplete');
+    return autocomplete !== 'new-password';
 };
 
-/**
- * Returns the first parent element satifying the {@code predicate} mapped by {@code resultFn} or else {@code defaultVal}.
- * @param {HTMLElement} element     The start element (excluded, starting with the parents)
- * @param {function} predicate      Matcher for the element to find, type (HTMLElement) => boolean
- * @param {function} resultFn       Callback function of type (HTMLElement) => {*} called for the first matching element
- * @param {fun} defaultValFn        Fallback return value supplier, if no element matching the predicate can be found
- */
-kpxcFields.traverseParents = function(element, predicate, resultFn = () => true, defaultValFn = () => false) {
-    for (let f = element.parentElement; f !== null; f = f.parentElement) {
-        if (predicate(f)) {
-            return resultFn(f);
-        }
+// Checks if Custom Login Fields are used for the site
+kpxcFields.isCustomLoginFieldsUsed = function() {
+    const location = kpxc.getDocumentLocation();
+    return kpxc.settings['defined-custom-fields'] && kpxc.settings['defined-custom-fields'][location];
+};
+
+// Returns true if form is a search form
+kpxcFields.isSearchForm = function(form) {
+    // Check form action
+    const formAction = form.getLowerCaseAttribute('action');
+    if (formAction && (formAction.includes('search') && !formAction.includes('research'))) {
+        return true;
     }
 
-    return defaultValFn();
+    // Ignore form with search classes
+    const formId = form.getLowerCaseAttribute('id');
+    if (form.className && (form.className.includes('search')
+        || (formId && formId.includes('search') && !formId.includes('research')))) {
+        return true;
+    }
+
+    return false;
 };
 
 // Checks if input field is a search field. Attributes or form action containing 'search', or parent element holding
 // role="search" will be identified as a search field.
 kpxcFields.isSearchField = function(target) {
-    const attributes = target.attributes;
-
     // Check element attributes
-    for (const attr of attributes) {
+    for (const attr of target.attributes) {
         if ((attr.value && (attr.value.toLowerCase().includes('search')) || attr.value === 'q')) {
             return true;
         }
@@ -298,21 +441,8 @@ kpxcFields.isSearchField = function(target) {
 
     // Check closest form
     const closestForm = kpxc.getForm(target);
-    if (closestForm) {
-        // Check form action
-        const formAction = closestForm.getAttribute('action');
-        if (formAction && (formAction.toLowerCase().includes('search')
-            && !formAction.toLowerCase().includes('research'))) {
-            return true;
-        }
-
-        // Check form class and id
-        const closestFormId = closestForm.getAttribute('id');
-        const closestFormClass = closestForm.className;
-        if (closestFormClass && (closestForm.className.toLowerCase().includes('search')
-            || (closestFormId && closestFormId.toLowerCase().includes('search') && !closestFormId.toLowerCase().includes('research')))) {
-            return true;
-        }
+    if (closestForm && kpxcFields.isSearchForm(closestForm)) {
+        return true;
     }
 
     // Check parent elements for role='search'
@@ -323,9 +453,10 @@ kpxcFields.isSearchField = function(target) {
     return false;
 };
 
-kpxcFields.isVisible = function(field) {
+// Returns true if element is visible on the page
+kpxcFields.isVisible = function(elem) {
     // Check element position and size
-    const rect = field.getBoundingClientRect();
+    const rect = elem.getBoundingClientRect();
     if (rect.x < 0
         || rect.y < 0
         || rect.width < 8
@@ -336,1703 +467,1251 @@ kpxcFields.isVisible = function(field) {
     }
 
     // Check CSS visibility
-    const fieldStyle = getComputedStyle(field);
-    if (fieldStyle.visibility && (fieldStyle.visibility === 'hidden' || fieldStyle.visibility === 'collapse')
-        || fieldStyle.opacity === '0') {
+    const elemStyle = getComputedStyle(elem);
+    if (elemStyle.visibility && (elemStyle.visibility === 'hidden' || elemStyle.visibility === 'collapse')) {
         return false;
     }
 
     // Check for parent opacity
-    if (kpxcFields.traverseParents(field, f => f.style.opacity === '0')) {
+    if (kpxcFields.traverseParents(elem, f => f.style.opacity === '0')) {
         return false;
     }
 
     return true;
 };
 
-kpxcFields.isAutocompleteAppropriate = function(field) {
-    const autocomplete = field.getLowerCaseAttribute('autocomplete');
-    return autocomplete !== 'new-password';
-};
-
-kpxcFields.getAllFields = function() {
-    const fields = [];
-    const inputs = kpxcObserverHelper.getInputs(document);
-
-    for (const i of inputs) {
-        if (kpxcFields.isVisible(i) && !kpxcFields.isSearchField(i) && kpxcFields.isAutocompleteAppropriate(i)) {
-            kpxcFields.setUniqueId(i);
-            fields.push(i);
-        }
-    }
-
-    _detectedFields = fields.length;
-
-    // Show add username-only option for the site in popup
-    if (!_singleInputEnabledForPage
-        && fields.length === 1 && fields[0].getLowerCaseAttribute('type') !== 'password') {
-        browser.runtime.sendMessage({
-            action: 'username_field_detected',
-            args: true
-        });
-    }
-
-    return fields;
-};
-
-kpxcFields.prepareVisibleFieldsWithID = function(pattern) {
-    const patterns = document.querySelectorAll(pattern);
-    for (const i of patterns) {
-        if (kpxcFields.isVisible(i)) {
-            kpxcFields.setUniqueId(i);
-        }
-    }
+kpxcFields.prepareId = function(id) {
+    return (id + '').replace(kpxcFields.rcssescape, kpxcFields.fcssescape);
 };
 
-kpxcFields.getAllCombinations = function(inputs) {
-    const fields = [];
-    let uField = null;
-
-    for (const i of inputs) {
-        if (i) {
-            if (i.getLowerCaseAttribute('type') === 'password') {
-                const uId = (!uField || uField.size < 1) ? null : uField.getAttribute('data-kpxc-id');
-
-                const combination = {
-                    username: uId,
-                    password: i.getAttribute('data-kpxc-id')
-                };
-                fields.push(combination);
-
-                // Reset selected username field
-                uField = null;
-            } else {
-                // Username field
-                uField = i;
-            }
+/**
+ * Returns the first parent element satifying the {@code predicate} mapped by {@code resultFn} or else {@code defaultVal}.
+ * @param {HTMLElement} element     The start element (excluded, starting with the parents)
+ * @param {function} predicate      Matcher for the element to find, type (HTMLElement) => boolean
+ * @param {function} resultFn       Callback function of type (HTMLElement) => {*} called for the first matching element
+ * @param {fun} defaultValFn        Fallback return value supplier, if no element matching the predicate can be found
+ */
+kpxcFields.traverseParents = function(element, predicate, resultFn = () => true, defaultValFn = () => false) {
+    for (let f = element.parentElement; f !== null; f = f.parentElement) {
+        if (predicate(f)) {
+            return resultFn(f);
         }
     }
 
-    if (_singleInputEnabledForPage && fields.length === 0 && uField) {
-        const combination = {
-            username: uField.getAttribute('data-kpxc-id'),
-            password: null
-        };
-        fields.push(combination);
-    }
-
-    return fields;
+    return defaultValFn();
 };
 
-kpxcFields.getCombination = async function(givenType, fieldId) {
-    if (kpxcFields.combinations.length === 0) {
-        if (kpxcFields.useDefinedCredentialFields()) {
-            return kpxcFields.combinations[0];
-        }
-    }
-    // Use defined credential fields (already loaded into combinations)
+// Use Custom Fields instead of detected combinations
+kpxcFields.useCustomLoginFields = async function() {
     const location = kpxc.getDocumentLocation();
-    if (kpxc.settings['defined-custom-fields'] && kpxc.settings['defined-custom-fields'][location]) {
-        return kpxcFields.combinations[0];
+    const creds = kpxc.settings['defined-custom-fields'][location];
+    if (!creds.username && !creds.password && !creds.totp && creds.fields.length === 0) {
+        return;
     }
 
-    for (const c of kpxcFields.combinations) {
-        if (c[givenType] === fieldId) {
-            return c;
+    // Finds the input field based on the stored ID
+    const findInputField = async function(inputFields, id) {
+        if (id) {
+            const input = inputFields.find(e => kpxcFields.getId(e) === id);
+            if (input) {
+                return input;
+            }
         }
-    }
 
-    // Find new combination
-    let combination = {
-        username: null,
-        password: null
+        return null;
     };
 
-    let newCombi = false;
-    if (givenType === 'username') {
-        const passwordField = kpxcFields.getPasswordField(fieldId, true);
-        let passwordId = null;
-        if (passwordField) {
-            passwordId = kpxcFields.prepareId(passwordField.getAttribute('data-kpxc-id'));
-        }
-        combination = {
-            username: fieldId,
-            password: passwordId
-        };
-        newCombi = true;
-    } else if (givenType === 'password') {
-        const usernameField = await kpxcFields.getUsernameField(fieldId, true);
-        let usernameId = null;
-        if (usernameField) {
-            usernameId = kpxcFields.prepareId(usernameField.getAttribute('data-kpxc-id'));
+    // Get all input fields from the page without any extra filters
+    const inputFields = [];
+    document.querySelectorAll('input, select').forEach(e => {
+        if (e.type !== 'hidden' && !e.disabled) {
+            inputFields.push(e);
         }
-        combination = {
-            username: usernameId,
-            password: fieldId
-        };
-        newCombi = true;
-    }
+    });
 
-    if (combination.username || combination.password) {
-        kpxcFields.combinations.push(combination);
-    }
+    [ creds.username, creds.password, creds.totp ] = await Promise.all([
+        await findInputField(inputFields, creds.username),
+        await findInputField(inputFields, creds.password),
+        await findInputField(inputFields, creds.totp)
+    ]);
 
-    if (combination.username) {
-        if (kpxc.credentials.length > 0) {
-            kpxc.preparePageForMultipleCredentials(kpxc.credentials);
+    // Handle StringFields
+    const stringFields = [];
+    for (const sf of creds.fields) {
+        const field = await findInputField(inputFields, sf);
+        if (field) {
+            stringFields.push(field);
         }
     }
 
-    if (newCombi) {
-        combination.isNew = true;
+    // Handle custom TOTP field
+    if (creds.totp) {
+        creds.totp.setAttribute('kpxc-defined', 'totp');
+        kpxcTOTPIcons.newIcon(creds.totp, kpxc.databaseState, true);
     }
-    return combination;
-};
 
-/**
-* Return the username field or null if it not exists
-*/
-kpxcFields.getUsernameField = async function(passwordId, checkDisabled) {
-    const passwordField = _f(passwordId);
-    if (!passwordField) {
-        return null;
-    }
-
-    const form = kpxc.getForm(passwordField);
-    let usernameField = null;
-
-    // Search all inputs on this one form
-    if (form) {
-        const inputs = form.querySelectorAll(kpxcFields.inputQueryPattern);
-        for (const i of inputs) {
-            kpxcFields.setUniqueId(i);
-            if (i.getAttribute('data-kpxc-id') === passwordId) {
-                return false; // Break
-            }
-
-            if (i.getLowerCaseAttribute('type') === 'password') {
-                return true; // Continue
-            }
-
-            if (kpxc.settings.showLoginFormIcon && await kpxc.passwordFilled() === false) {
-                kpxcUsernameIcons.newIcon(usernameField);
-            }
-            usernameField = i;
-        }
-    } else {
-        // Search all inputs on page
-        const inputs = kpxcFields.getAllFields();
-        kpxc.initPasswordGenerator(inputs);
-        for (const i of inputs) {
-            if (i.getAttribute('data-kpxc-id') === passwordId) {
-                break;
-            }
+    const combinations = [];
+    combinations.push({
+        username: creds.username,
+        password: creds.password,
+        passwordInputs: [ creds.password ],
+        totp: creds.totp,
+        fields: stringFields
+    });
 
-            if (i.getLowerCaseAttribute('type') === 'password') {
-                continue;
-            }
+    return combinations;
+};
 
-            usernameField = i;
+// Copied from Sizzle.js
+kpxcFields.rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g;
+kpxcFields.fcssescape = function(ch, asCodePoint) {
+    if (asCodePoint) {
+        // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+        if (ch === '\0') {
+            return '\uFFFD';
         }
-    }
 
-    if (usernameField && !checkDisabled) {
-        const usernameId = usernameField.getAttribute('data-kpxc-id');
-        // Check if usernameField is already used by another combination
-        for (const c of kpxcFields.combinations) {
-            if (c.username === usernameId) {
-                usernameField = null;
-                break;
-            }
-        }
+        // Control characters and (dependent upon position) numbers get escaped as code points
+        return ch.slice(0, -1) + '\\' + ch.charCodeAt(ch.length - 1).toString(16) + ' ';
     }
 
-    kpxcFields.setUniqueId(usernameField);
-    return usernameField;
+    // Other potentially-special ASCII characters get backslash-escaped
+    return '\\' + ch;
 };
 
+
 /**
-* Return the password field or null if it not exists
-*/
-kpxcFields.getPasswordField = function(usernameId, checkDisabled) {
-    const usernameField = _f(usernameId);
-    if (!usernameField) {
-        return null;
-    }
+ * @Object kpxc
+ * The main content script object.
+ */
+const kpxc = {};
+kpxc.combinations = [];
+kpxc.credentials = [];
+kpxc.databaseState = DatabaseState.DISCONNECTED;
+kpxc.detectedFields = 0;
+kpxc.inputs = [];
+kpxc.settings = {};
+kpxc.singleInputEnabledForPage = false;
+kpxc.submitUrl = null;
+kpxc.url = null;
 
-    const form = kpxc.getForm(usernameField);
-    let passwordField = null;
+// Add page to Site Preferences with Username-only detection enabled. Set from the popup
+kpxc.addToSitePreferences = async function(sites) {
+    kpxc.initSitePreferences();
 
-    // Search all inputs on this one form
-    if (form) {
-        const inputs = form.querySelectorAll('input[type=\'password\']');
-        if (inputs.length > 0) {
-            passwordField = inputs[0];
-        }
-        if (passwordField && passwordField.length < 1) {
-            passwordField = null;
-        }
+    // Returns a predefined URL for certain sites
+    let site = kpxcSites.definedURL(trimURL(window.top.location.href));
 
-        kpxcPasswordIcons.newIcon(kpxc.settings.usePasswordGeneratorIcons, passwordField, [], undefined, _databaseState);
-    } else {
-        // Search all inputs on page
-        const inputs = kpxcFields.getAllFields();
-        kpxc.initPasswordGenerator(inputs);
-
-        let active = false;
-        for (const i of inputs) {
-            if (i.getAttribute('data-kpxc-id') === usernameId) {
-                active = true;
-            }
-            if (active && i.getLowerCaseAttribute('type') === 'password') {
-                passwordField = i;
-                break;
-            }
+    // Check if the site already exists -> update the current settings
+    let siteExists = false;
+    for (const existingSite of kpxc.settings['sitePreferences']) {
+        if (existingSite.url === site) {
+            existingSite.ignore = IGNORE_NOTHING;
+            existingSite.usernameOnly = true;
+            siteExists = true;
         }
     }
 
-    if (passwordField && !checkDisabled) {
-        const passwordId = passwordField.getAttribute('data-kpxc-id');
-        // Check if passwordField is already used by another combination
-        for (const c of kpxcFields.combinations) {
-            if (c.password === passwordId) {
-                passwordField = null;
-                break;
-            }
-        }
+    if (!siteExists) {
+        // Add wildcard to the URL
+        site = site.slice(0, site.lastIndexOf('/') + 1) + '*';
+
+        kpxc.settings['sitePreferences'].push({
+            url: site,
+            ignore: IGNORE_NOTHING,
+            usernameOnly: true
+        });
     }
 
-    kpxcFields.setUniqueId(passwordField);
-    return passwordField;
+    await sendMessage('save_settings', kpxc.settings);
+    sendMessage('username_field_detected', false);
 };
 
-kpxcFields.prepareCombinations = async function(combinations) {
-    if (combinations.length === 0) {
-        return;
-    }
+// Clears all from the content and background scripts, including autocomplete
+kpxc.clearAllFromPage = function() {
+    kpxc.credentials = [];
+    kpxc.inputs = [];
+    kpxcAutocomplete.elements = [];
+    _called.retrieveCredentials = false;
 
-    // Only request this once if there are combinations available
-    let passwordFilled;
-    if (combinations.length > 0) {
-        passwordFilled = await kpxc.passwordFilled();
+    if (kpxc.settings.autoCompleteUsernames) {
+        kpxcAutocomplete.closeList();
     }
 
-    for (const c of combinations) {
-        const pwField = _f(c.password);
-        // Needed for auto-complete: don't overwrite manually filled-in password field
-        if (pwField && !pwField.getAttribute('kpxcFields-onChange')) {
-            pwField.setAttribute('kpxcFields-onChange', true);
-            pwField.addEventListener('change', function() {
-                this.setAttribute('unchanged', false);
-            });
-        }
-
-        const fieldId = c.password || c.username;
-        const field = _f(fieldId);
-
-        // If no username field is found, handle the single password field as such
-        const usernameField = c.username ? _f(c.username) : field;
+    // Switch back to default popup
+    sendMessage('get_status', [ true ]); // This is an internal function call
+};
 
-        if (kpxc.settings.showLoginFormIcon && passwordFilled === false) {
-            kpxcUsernameIcons.newIcon(usernameField, _databaseState);
-        }
+// Creates a new combination manually from active element
+kpxc.createCombination = async function(activeElement) {
+    const combination = {
+        username: null,
+        password: null,
+        passwordInputs: [],
+        form: activeElement.form
+    };
 
-        // Initialize form-submit for remembering credentials
-        if (field) {
-            const form = kpxc.getForm(field);
-            if (form && form.length > 0) {
-                kpxcForm.init(form, c);
-            }
-        }
+    if (activeElement.getLowerCaseAttribute('type') === 'password') {
+        combination.password = activeElement;
+    } else {
+        combination.username = activeElement;
     }
+
+    return combination;
 };
 
-kpxcFields.useDefinedCredentialFields = function() {
-    const location = kpxc.getDocumentLocation();
-    if (kpxc.settings['defined-custom-fields'] && kpxc.settings['defined-custom-fields'][location]) {
-        const creds = kpxc.settings['defined-custom-fields'][location];
-
-        // Handle custom TOTP field
-        if (_f(creds.totp)) {
-            const totpField = _f(creds.totp);
-            totpField.setAttribute('kpxc-defined', 'totp');
-            kpxcTOTPIcons.newIcon(totpField, _databaseState, true);
-        }
+// Switch credentials if database is changed or closed
+kpxc.detectDatabaseChange = async function(response) {
+    kpxc.databaseState = DatabaseState.LOCKED;
+    kpxc.clearAllFromPage();
+    kpxcIcons.switchIcons();
 
-        let found = _f(creds.username) || _f(creds.password);
-        for (const i of creds.fields) {
-            if (_fs(i)) {
-                found = true;
-                break;
-            }
-        }
+    if (document.visibilityState !== 'hidden') {
+        if (response.hash.new !== '' && response.hash.new !== response.hash.old) {
+            _called.retrieveCredentials = false;
+            const settings = await sendMessage('load_settings');
+            kpxc.settings = settings;
+            kpxc.databaseState = DatabaseState.UNLOCKED;
 
-        if (found) {
-            if (creds.username) {
-                _f(creds.username).setAttribute('kpxc-defined', 'username');
-            }
+            await kpxc.initCredentialFields();
+            kpxcIcons.switchIcons();
 
-            if (creds.password) {
-                _f(creds.password).setAttribute('kpxc-defined', 'password');
+            // If user has requested a manual fill through context menu the actual credential filling
+            // is handled here when the opened database has been regognized. It's not a pretty hack.
+            const manualFill = await sendMessage('page_get_manual_fill');
+            if (manualFill !== ManualFill.NONE) {
+                await kpxc.fillInFromActiveElement(manualFill === ManualFill.PASSWORD);
+                await sendMessage('page_set_manual_fill', ManualFill.NONE);
             }
-
-            const fields = {
-                username: creds.username,
-                password: creds.password,
-                fields: creds.fields
-            };
-            kpxcFields.combinations = [];
-            kpxcFields.combinations.push(fields);
-
-            return true;
+        } else if (!response.connected) {
+            kpxc.databaseState = DatabaseState.DISCONNECTED;
+            kpxcIcons.switchIcons();
         }
     }
-
-    return false;
 };
 
-const kpxcObserverHelper = {};
-
-kpxcObserverHelper.inputTypes = [
-    'text',
-    'email',
-    'password',
-    'tel',
-    'number',
-    'username', // Note: Not a standard
-    undefined, // Input field can be without any type. Include this and null to the list.
-    null
-];
-
-// Ignores all nodes that doesn't contain elements
-// Also ignore few Youtube-specific custom nodeNames
-kpxcObserverHelper.ignoredNode = function(target) {
-    if (target.nodeType === Node.ATTRIBUTE_NODE
-        || target.nodeType === Node.TEXT_NODE
-        || target.nodeType === Node.CDATA_SECTION_NODE
-        || target.nodeType === Node.PROCESSING_INSTRUCTION_NODE
-        || target.nodeType === Node.COMMENT_NODE
-        || target.nodeType === Node.DOCUMENT_TYPE_NODE
-        || target.nodeType === Node.NOTATION_NODE
-        || target.nodeName === 'HTML'
-        || target.nodeName === 'LINK'
-        || target.nodeName === 'HEAD'
-        || target.nodeName === 'VIDEO'
-        || target.nodeName.startsWith('YTMUSIC')
-        || target.nodeName.startsWith('YT-')) {
-        return true;
-    }
-
-    return false;
-};
-
-kpxcObserverHelper.getInputs = function(target, ignoreVisibility = false) {
-    // Ignores target element if it's not an element node
-    if (kpxcObserverHelper.ignoredNode(target)) {
-        return [];
+// Fill requested from the context menu. Active element is used for combination detection
+kpxc.fillInFromActiveElement = async function(passOnly = false) {
+    const el = document.activeElement;
+    if (el.nodeName !== 'INPUT' || kpxc.credentials.length === 0) {
+        return;
+    } else if (kpxc.credentials.length > 1 && kpxc.combinations.length > 0) {
+        kpxcAutocomplete.showList(el);
+        return;
     }
 
-    // Filter out any input fields with type 'hidden' right away
-    const inputFields = [];
-    Array.from(target.getElementsByTagName('input')).forEach(e => {
-        if (e.type !== 'hidden'
-            && !e.disabled
-            && !kpxcObserverHelper.hasKpxcClass(e)) {
-            inputFields.push(e);
-        }
-    });
-
-    if (inputFields.length === 0) {
-        return [];
+    // No previous combinations detected. Create a new one from active element
+    let combination;
+    if (kpxc.combinations.length === 0) {
+        combination = await kpxc.createCombination(el);
+    } else {
+        combination = el.type === 'password'
+                    ? await kpxcFields.getCombination(el, 'password')
+                    : await kpxcFields.getCombination(el, 'username');
     }
 
-    // Do not allow more visible inputs than _maximumInputs (default value: 100) -> return the first 100
-    if (inputFields.length > _maximumInputs) {
-        return inputFields.slice(0, _maximumInputs);
+    // Do not allow filling password to a non-password field
+    if (passOnly && combination && !combination.password) {
+        kpxcUI.createNotification('warning', tr('fieldsNoPasswordField'));
+        return;
     }
 
-    // Only include input fields that match with kpxcObserverHelper.inputTypes
-    const inputs = [];
-    for (const field of inputFields) {
-        const type = field.getLowerCaseAttribute('type');
-
-        if (ignoreVisibility) {
-            if (kpxcObserverHelper.inputTypes.includes(type)) {
-                inputs.push(field);
-            }
-        } else {
-            if (kpxcObserverHelper.inputTypes.includes(type) && kpxcFields.isVisible(field)) {
-                kpxcFields.setUniqueId(field);
-                inputs.push(field);
-            }
-        }
-    }
-    return inputs;
+    await sendMessage('page_set_login_id', 0);
+    kpxc.fillInCredentials(combination, kpxc.credentials[0].login, kpxc.credentials[0].uuid, passOnly);
 };
 
-// Gets of generates an ID for the element
-kpxcObserverHelper.getId = function(target) {
-    if (target.classList.length > 0) {
-        return target.classlist;
+// Fill requested by Auto-Fill
+kpxc.fillFromAutofill = async function() {
+    if (kpxc.credentials.length !== 1 || kpxc.combinations.length !== 1) {
+        return;
     }
 
-    if (target.id !== '') {
-        return target.id;
-    }
+    await sendMessage('page_set_login_id', 0);
+    kpxc.fillInCredentials(kpxc.combinations[0], kpxc.credentials[0].login, kpxc.credentials[0].uuid);
 
-    return `kpxc${target.clientTop}${target.clientLeft}${target.clientWidth}${target.clientHeight}`;
+    // Generate popup-list of usernames + descriptions
+    sendMessage('popup_login', [ `${kpxc.credentials[0].login} (${kpxc.credentials[0].name})` ]);
 };
 
-kpxcObserverHelper.hasKpxcClass = function(target) {
-    if (!target.className
-        || !target.className.includes('kpxc')) {
-        return false;
+// Fill requested by selecting credentials from the popup
+kpxc.fillFromPopup = async function(id, uuid) {
+    if (!kpxc.credentials.length === 0 || !kpxc.credentials[id] || kpxc.combinations.length === 0) {
+        return;
     }
 
-    return target.className.includes('kpxc');
+    await sendMessage('page_set_login_id', id);
+    kpxc.fillInCredentials(kpxc.combinations[0], kpxc.credentials[id].login, uuid);
+    kpxcAutocomplete.closeList();
 };
 
-kpxcObserverHelper.ignoredElement = function(target) {
-    if (kpxcObserverHelper.ignoredNode(target)) {
-        return true;
-    }
+// Fill requested from TOTP icon
+kpxc.fillFromTOTP = async function(target) {
+    const el = target || document.activeElement;
+    let index = await sendMessage('page_get_login_id');
 
-    // Ignore elements that do not have a className (including SVG)
-    if (typeof target.className !== 'string') {
-        return true;
+    // Use the first credential available if not set
+    if (index === undefined) {
+        index = 0;
     }
 
-    // Ignore KeePassXC-Browser classes
-    if (kpxcObserverHelper.hasKpxcClass(target)) {
-        return true;
-    }
+    if (index >= 0 && kpxc.credentials[index]) {
+        // Check the value from StringFields
+        if (kpxc.credentials[index].stringFields && kpxc.credentials[index].stringFields.length > 0) {
+            const stringFields = kpxc.credentials[index].stringFields;
+            for (const s of stringFields) {
+                const val = s['KPH: {TOTP}'];
+                if (val) {
+                    kpxc.setValue(el, val);
+                }
+            }
+        } else if (kpxc.credentials[index].totp && kpxc.credentials[index].totp.length > 0) {
+            // Retrieve a new TOTP value
+            const totp = await sendMessage('get_totp', [ kpxc.credentials[index].uuid, kpxc.credentials[index].totp ]);
+            if (!totp) {
+                kpxcUI.createNotification('warning', tr('credentialsNoTOTPFound'));
+                return;
+            }
 
-    return false;
+            kpxc.setValue(el, totp);
+        }
+    }
 };
 
-kpxcObserverHelper.handleObserverAdd = function(target) {
-    if (kpxcObserverHelper.ignoredElement(target)) {
+// Fill requested from username icon
+kpxc.fillFromUsernameIcon = async function(combination) {
+    if (kpxc.credentials.length === 0) {
         return;
-    }
-
-    const inputs = kpxcObserverHelper.getInputs(target);
-    if (inputs.length === 0) {
+    } else if (kpxc.credentials.length > 1) {
+        kpxcAutocomplete.showList(combination.username || combination.password);
         return;
     }
 
-    const neededLength = _detectedFields === 1 ? 0 : 1;
-    const id = kpxcObserverHelper.getId(target);
-    if (inputs.length > neededLength && !_observerIds.includes(id)) {
-        // Save target element id for preventing multiple calls to initCredentialsFields()
-        _observerIds.push(id);
-
-        // Sometimes the settings haven't been loaded before new input fields are detected
-        if (Object.keys(kpxc.settings).length === 0) {
-            kpxc.init();
-        } else {
-            kpxc.handleCredentialFields(inputs);
-        }
-    }
+    await sendMessage('page_set_login_id', 0);
+    kpxc.fillInCredentials(combination, kpxc.credentials[0].login, kpxc.credentials[0].uuid);
 };
 
-kpxcObserverHelper.handleObserverRemove = function(target) {
-    if (kpxcObserverHelper.ignoredElement(target)) {
+/**
+ * The main function for filling any credentials
+ * @param {Array} combination Combination to be used
+ * @param {String} predefinedUsername Predefined username. If set, there's no need to find it from combinations
+ * @param {Boolean} passOnly If only password is filled
+ * @param {String} uuid Identifier for the entry. There can be identical usernames with different password
+ */
+kpxc.fillInCredentials = async function(combination, predefinedUsername, uuid, passOnly = false) {
+    if (kpxc.credentials.length === 0) {
+        kpxcUI.createNotification('error', tr('credentialsNoLoginsFound'));
         return;
     }
 
-    const inputs = kpxcObserverHelper.getInputs(target, true);
-    if (inputs.length === 0) {
+    if (!combination || (!combination.username && !combination.password)) {
         return;
     }
 
-    kpxc.deleteHiddenIcons();
-
-    // Remove target element id from the list
-    const id = kpxcObserverHelper.getId(target);
-    if (_observerIds.includes(id)) {
-        const index = _observerIds.indexOf(id);
-        if (index >= 0) {
-            _observerIds.splice(index, 1);
-        }
+    // Use predefined username as default
+    let usernameValue = predefinedUsername;
+    if (!usernameValue) {
+        // With single password field the combination.password is used instead
+        usernameValue = combination.username ? combination.username.value : combination.password.value;
     }
-};
 
-kpxcObserverHelper.detectURLChange = function() {
-    if (_documentURL !== document.location.href) {
-        _documentURL = document.location.href;
-        kpxcEvents.clearCredentials();
-        kpxc.initCredentialFields(true);
+    // Find the correct credentials
+    const selectedCredentials = kpxc.credentials.find(c => c.uuid === uuid);
+    if (!selectedCredentials) {
+        return;
     }
-};
 
-MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
-
-
-const kpxc = {};
-kpxc.settings = {};
-kpxc.u = null;
-kpxc.p = null;
-kpxc.url = null;
-kpxc.submitUrl = null;
-kpxc.credentials = [];
-kpxc.observer = null;
-
-const initContentScript = async function() {
-    try {
-        const settings = await browser.runtime.sendMessage({
-            action: 'load_settings'
-        });
-
-        kpxc.settings = settings;
+    // Handle auto-submit
+    let skipAutoSubmit = false;
+    if (selectedCredentials.skipAutoSubmit !== undefined) {
+        skipAutoSubmit = selectedCredentials.skipAutoSubmit === 'true';
+    }
 
-        // Don't initialize MutationObserver if the site is ignored
-        if (kpxc.siteIgnored()) {
-            return;
-        }
+    // Fill password
+    if (combination.password) {
+        kpxc.setValueWithChange(combination.password, selectedCredentials.password);
+        await kpxc.setPasswordFilled(true);
+    }
 
-        if (kpxc.settings.useObserver && !kpxc.observer) {
-            kpxc.initObserver();
+    // Fill username
+    if (combination.username && (!combination.username.value || combination.username.value !== usernameValue)) {
+        if (!passOnly) {
+            kpxc.setValueWithChange(combination.username, usernameValue);
         }
+    }
 
-        await kpxc.updateDatabaseState();
-        kpxc.switchIcons();
-        await kpxc.initCredentialFields();
-
-        // Retrieve submitted credentials if available.
-        const creds = await browser.runtime.sendMessage({
-            action: 'page_get_submitted'
-        });
-
-        const redirectCount = await browser.runtime.sendMessage({
-            action: 'page_get_redirect_count'
-        });
+    // Fill StringFields
+    if (selectedCredentials.stringFields.length > 0) {
+        kpxc.fillInStringFields(combination.fields, selectedCredentials.stringFields);
+    }
 
-        if (creds && creds.submitted) {
-            // If username field is not set, wait for credentials in kpxc.retrieveCredentialsCallback.
-            if (!creds.username) {
-                return;
-            }
+    // Close autocomplete menu after fill
+    kpxcAutocomplete.closeList();
 
-            if (redirectCount >= kpxc.settings.redirectAllowance) {
-                await browser.runtime.sendMessage({
-                    action: 'page_clear_submitted'
-                });
-            }
+    // Reset ManualFill
+    await sendMessage('page_set_manual_fill', ManualFill.NONE);
 
-            kpxc.rememberCredentials(creds.username, creds.password, creds.url, creds.oldCredentials);
+    // Auto-submit
+    if (kpxc.settings.autoSubmit && !skipAutoSubmit) {
+        const submitButton = kpxc.getFormSubmitButton(combination.form);
+        if (submitButton !== undefined) {
+            submitButton.click();
+        } else {
+            combination.form.submit();
         }
-    } catch (err) {
-        console.log('initContentScript error: ', err);
     }
 };
 
-if (document.readyState === 'complete' || (document.readyState !== 'loading' && !document.documentElement.doScroll)) {
-    initContentScript();
-} else {
-    document.addEventListener('DOMContentLoaded', initContentScript);
-}
-
-kpxc.init = function() {
-    initContentScript();
-};
-
-// Detects DOM changes in the document
-kpxc.initObserver = function() {
-    kpxc.observer = new MutationObserver(function(mutations, obs) {
-        if (document.visibilityState === 'hidden' || kpxcUI.mouseDown) {
-            return;
-        }
-
-        // Limit the mutation handling
-        if (mutations.length > _maximumMutations) {
-            mutations.slice(0, _maximumMutations);
-        }
-
-        for (const mut of mutations) {
-            // Skip text nodes and base HTML element
-            if (kpxcObserverHelper.ignoredNode(mut.target)) {
-                continue;
-            }
-
-            // Check document URL change and detect new fields
-            kpxcObserverHelper.detectURLChange();
-
-            // Handle attributes only if CSS display is modified
-            if (mut.type === 'attributes') {
-                // Check if some class is changed that holds a form or input field(s). Ignore large forms.
-                const formInput = mut.target.querySelector('form input');
-                if (mut.attributeName === 'class' && formInput !== null && formInput.form.length < 20) {
-                    kpxc.handleCredentialFields(kpxcObserverHelper.getInputs(formInput.form));
-                    continue;
-                }
+// Fills StringFields defined in Custom Fields
+kpxc.fillInStringFields = function(fields, stringFields) {
+    const filledInFields = [];
+    if (fields && stringFields && fields.length > 0 && stringFields.length > 0) {
+        for (let i = 0; i < fields.length; i++) {
+            const currentField = fields[i];
+            const stringFieldValue = Object.values(stringFields[i]);
 
-                const newValue = mut.target.getAttribute(mut.attributeName);
-                if (newValue && (newValue.includes('display') || newValue.includes('z-index'))) {
-                    if (mut.target.style.display !== 'none') {
-                        kpxcObserverHelper.handleObserverAdd(mut.target);
-                    } else {
-                        kpxcObserverHelper.handleObserverRemove(mut.target);
-                    }
-                }
-            } else if (mut.type === 'childList') {
-                kpxcObserverHelper.handleObserverAdd((mut.addedNodes.length > 0) ? mut.addedNodes[0] : mut.target);
-                kpxcObserverHelper.handleObserverRemove((mut.removedNodes.length > 0) ? mut.removedNodes[0] : mut.target);
+            if (currentField && stringFieldValue[0]) {
+                kpxc.setValue(currentField, stringFieldValue[0]);
+                filledInFields.push(currentField);
             }
         }
-    });
-
-    // define what element should be observed by the observer
-    // and what types of mutations trigger the callback
-    kpxc.observer.observe(document, {
-        subtree: true,
-        attributes: true,
-        childList: true,
-        characterData: true,
-        attributeFilter: [ 'style', 'class' ]
-    });
+    }
 };
 
-// Clears all from the content and background scripts, including autocomplete
-kpxc.clearAllFromPage = function() {
-    kpxcEvents.clearCredentials();
-    browser.runtime.sendMessage({
-        action: 'page_clear_logins'
-    });
-
-    // Switch back to default popup
-    browser.runtime.sendMessage({
-        action: 'get_status',
-        args: [ true ] // Set polling to true, this is an internal function call
-    });
+// Get location URL by domain or full URL
+kpxc.getDocumentLocation = function() {
+    return kpxc.settings.saveDomainOnly ? document.location.origin : document.location.href;
 };
 
-// Switch credentials if database is changed or closed
-kpxc.detectDatabaseChange = async function(response) {
-    _databaseState = DatabaseState.LOCKED;
-    kpxc.clearAllFromPage();
-    kpxc.switchIcons();
-
-    if (document.visibilityState !== 'hidden') {
-        if (response.hash.new !== '' && response.hash.new !== response.hash.old) {
-            _called.retrieveCredentials = false;
-            const settings = await browser.runtime.sendMessage({
-                action: 'load_settings'
-            });
-            kpxc.settings = settings;
-            await kpxc.initCredentialFields(true);
-            _databaseState = DatabaseState.UNLOCKED;
-            kpxc.switchIcons();
+// Returns the form that includes the inputField
+kpxc.getForm = function(inputField) {
+    if (inputField.form) {
+        return inputField.form;
+    }
 
-            // If user has requested a manual fill through context menu the actual credential filling
-            // is handled here when the opened database has been regognized. It's not a pretty hack.
-            if (_called.manualFillRequested && _called.manualFillRequested !== ManualFill.NONE) {
-                await kpxc.fillInFromActiveElement(false, _called.manualFillRequested === ManualFill.PASS);
-                _called.manualFillRequested = ManualFill.NONE;
+    for (const f of document.forms) {
+        for (const e of f.elements) {
+            if (e === inputField) {
+                return f;
             }
-        } else if (!response.connected) {
-            _databaseState = DatabaseState.DISCONNECTED;
-            kpxc.switchIcons();
         }
     }
 };
 
-// Checks if the site has been ignored using Site Preferences
-kpxc.siteIgnored = function(condition) {
-    kpxc.initializeSitePreferences();
-    if (kpxc.settings.sitePreferences) {
-        let currentLocation;
-        try {
-            currentLocation = window.top.location.href;
-        } catch (err) {
-            // Cross-domain security error inspecting window.top.location.href.
-            // This catches an error when an iframe is being accessed from another (sub)domain -> use the iframe URL instead.
-            currentLocation = window.self.location.href;
-        }
+// Returns form action URL or document origin if it's not found
+kpxc.getFormActionUrl = function(combination) {
+    if (!combination || (combination.username === null && combination.password === null)) {
+        return null;
+    }
 
-        const currentSetting = condition || IGNORE_FULL;
-        for (const site of kpxc.settings.sitePreferences) {
-            if (siteMatch(site.url, currentLocation) || site.url === currentLocation) {
-                if (site.ignore === currentSetting) {
-                    return true;
-                }
+    let action = null;
+    if (combination.form && combination.form.length > 0) {
+        action = combination.form.action;
+    }
 
-                _singleInputEnabledForPage = site.usernameOnly;
-            }
-        }
+    if (typeof(action) !== 'string' || action === '') {
+        action = document.location.origin + document.location.pathname;
     }
 
-    return false;
+    return action;
 };
 
-// Initializes all input fields from the whole page
-kpxc.initCredentialFields = async function(forceCall) {
-    if (_called.initCredentialFields && !forceCall) {
-        return;
+// Get site URL in a proper form
+kpxc.getSite = function(sites) {
+    if (!sites || sites.length === 0) {
+        return '';
     }
-    _called.initCredentialFields = true;
 
-    await browser.runtime.sendMessage({
-        action: 'page_clear_logins',
-        args: _called.clearLogins
-    });
-
-    _called.clearLogins = true;
+    let site = trimURL(sites[0]);
+    kpxc.initSitePreferences();
 
-    if (kpxc.siteIgnored()) {
-        return;
+    if (slashNeededForUrl(site)) {
+        site += '/';
     }
 
-    // Get inputs from the whole document
-    const inputs = kpxcFields.getAllFields();
-    kpxc.handleCredentialFields(inputs);
+    return site;
 };
 
-// Handles the input fields from the whole page or from dynamically added content
-kpxc.handleCredentialFields = async function(inputs) {
-    if (inputs.length === 0) {
-        return;
-    }
+// Identifies all forms in the page
+kpxc.identifyFormInputs = async function() {
+    const forms = [];
+    const documentForms = document.forms; // Cache the value just in case
 
-    if (!kpxcFields.useDefinedCredentialFields()) {
-        // Get all combinations of username + password fields
-        kpxcFields.combinations = kpxcFields.getAllCombinations(inputs);
-    }
-    kpxcFields.prepareCombinations(kpxcFields.combinations);
+    for (const form of documentForms) {
+        if (!kpxcFields.isVisible(form)) {
+            continue;
+        }
 
-    if (kpxc.settings.showOTPIcon) {
-        kpxc.initOTPFields(inputs);
+        if (kpxcFields.isSearchForm(form)) {
+            continue;
+        }
+
+        forms.push(form);
     }
 
-    if (kpxcFields.combinations.length === 0 && inputs.length === 0) {
-        browser.runtime.sendMessage({
-            action: 'show_default_browseraction'
-        });
-        return;
+    // Identify input fields in the saved forms
+    const inputs = [];
+    for (const form of forms) {
+        const formInputs = kpxcObserverHelper.getInputs(form);
+        for (const f of formInputs) {
+            inputs.push(f);
+        }
     }
 
-    kpxc.url = document.location.href;
-    kpxc.submitUrl = kpxc.getFormActionUrl(kpxcFields.combinations[0]);
+    await kpxc.initCombinations(inputs);
+    return inputs;
+};
+
+// Ignore a certain site
+kpxc.ignoreSite = async function(sites) {
+    const site = kpxc.getSite(sites);
 
-    // Get submitUrl for a single input
-    if (!kpxc.submitUrl && kpxcFields.combinations.length === 1 && inputs.length === 1) {
-        kpxc.submitUrl = kpxc.getFormActionUrlFromSingleInput(inputs[0]);
+    // Check if the site already exists
+    let siteExists = false;
+    for (const existingSite of kpxc.settings['sitePreferences']) {
+        if (existingSite.url === site) {
+            existingSite.ignore = IGNORE_NORMAL;
+            siteExists = true;
+        }
     }
 
-    if (kpxc.settings.autoRetrieveCredentials && _called.retrieveCredentials === false && (kpxc.url && kpxc.submitUrl)) {
-        _called.retrieveCredentials = true;
-        kpxc.retrieveCredentialsCallback(await browser.runtime.sendMessage({
-            action: 'retrieve_credentials',
-            args: [ kpxc.url, kpxc.submitUrl ]
-        }));
-    } else if (_singleInputEnabledForPage) {
-        kpxc.preparePageForMultipleCredentials(kpxc.credentials);
+    if (!siteExists) {
+        kpxc.settings['sitePreferences'].push({
+            url: site,
+            ignore: IGNORE_NORMAL,
+            usernameOnly: false
+        });
     }
+
+    await sendMessage('save_settings', kpxc.settings);
 };
 
-kpxc.initPasswordGenerator = function(inputs) {
-    if (!kpxc.settings.usePasswordGeneratorIcons) {
+// Initialize autocomplete for username fields
+kpxc.initAutocomplete = function() {
+    if (!kpxc.settings.autoCompleteUsernames) {
         return;
     }
 
-    for (let i = 0; i < inputs.length; i++) {
-        if (inputs[i] && inputs[i].getLowerCaseAttribute('type') === 'password') {
-            kpxcPasswordIcons.newIcon(true, inputs[i], inputs, i, _databaseState);
+    for (const c of kpxc.combinations) {
+        if (c.username) {
+            kpxcAutocomplete.create(c.username, false, kpxc.settings.autoSubmit);
+        } else if (!c.username && c.password) {
+            // Single password field
+            kpxcAutocomplete.create(c.password, false, kpxc.settings.autoSubmit);
         }
     }
 };
 
-kpxc.initOTPFields = function(inputs) {
-    for (const i of inputs) {
-        const id = i.getLowerCaseAttribute('id');
-        const name = i.getLowerCaseAttribute('name');
-        const autocomplete = i.getLowerCaseAttribute('autocomplete');
+// Looks for any username & password combinations from the detected input fields
+kpxc.initCombinations = async function(inputs = []) {
+    if (inputs.length === 0) {
+        return [];
+    }
 
-        if (autocomplete === 'one-time-code' || acceptedOTPFields.some(f => (id && id.includes(f)) || (name && name.includes(f)))) {
-            kpxcTOTPIcons.newIcon(i, _databaseState);
-        }
+    const combinations = kpxcFields.isCustomLoginFieldsUsed()
+                       ? await kpxcFields.useCustomLoginFields()
+                       : await kpxcFields.getAllCombinations(inputs);
+    if (!combinations || combinations.length === 0) {
+        return [];
     }
-};
 
-kpxc.receiveCredentialsIfNecessary = async function() {
-    if (kpxc.credentials.length === 0 && _called.retrieveCredentials === false) {
-        const credentials = await browser.runtime.sendMessage({
-            action: 'retrieve_credentials',
-            args: [ kpxc.url, kpxc.submitUrl, true ] // Sets triggerUnlock to true
-        });
+    for (const c of combinations) {
+        // If no username field is found, handle the single password field as such
+        const field = c.username || c.password;
+        if (field && c.form) {
+            // Initialize form-submit for remembering credentials
+            kpxcForm.init(c.form, c);
+        }
 
-        // If the database was locked, this is scope never met. In these cases the response is met at kpxc.detectDatabaseChange
-        _called.manualFillRequested = ManualFill.NONE;
-        await kpxc.retrieveCredentialsCallback(credentials, false);
-        return credentials;
+        // Don't allow duplicates
+        if (!kpxc.combinations.some(f => f.username === c.username && f.password === c.password && f.totp === c.totp && f.form === c.form)) {
+            kpxc.combinations.push(c);
+        }
     }
 
-    return kpxc.credentials;
+    return combinations;
 };
 
-kpxc.retrieveCredentialsCallback = async function(credentials, dontAutoFillIn) {
-    if (kpxcFields.combinations.length > 0) {
-        kpxc.u = _f(kpxcFields.combinations[0].username);
-        kpxc.p = _f(kpxcFields.combinations[0].password);
-    }
-
-    if (credentials && credentials.length > 0) {
-        kpxc.credentials = credentials;
-        await kpxc.prepareFieldsForCredentials(!dontAutoFillIn);
-    }
+// The main function for finding input fields
+kpxc.initCredentialFields = async function() {
+    await sendMessage('page_clear_logins', _called.clearLogins );
+    _called.clearLogins = true;
 
-    // Retrieve submitted credentials if available
-    const creds = await browser.runtime.sendMessage({
-        action: 'page_get_submitted'
-    });
+    // Identify all forms in the page
+    const formInputs = await kpxc.identifyFormInputs();
 
-    if (creds && creds.submitted) {
-        await browser.runtime.sendMessage({
-            action: 'page_clear_submitted'
-        });
+    // Search all remaining inputs from the page, ignore the previous input fields
+    const pageInputs = await kpxcFields.getAllPageInputs(formInputs);
+    if (formInputs.length === 0 && pageInputs.length === 0) {
+        // Run 'redetect_credentials' manually if no fields are found after a page load
+        setTimeout(async function() {
+            if (kpxc.inputs.length === 0 || kpxc.combinations.length === 0) {
+                kpxc.initCredentialFields();
+            }
+        }, 2000);
 
-        kpxc.rememberCredentials(creds.username, creds.password, creds.url, creds.oldCredentials);
+        return;
     }
-};
 
-kpxc.prepareFieldsForCredentials = async function(autoFillInForSingle) {
-    // Only one login for this site
-    if (autoFillInForSingle && kpxc.settings.autoFillSingleEntry && kpxc.credentials.length === 1) {
-        let combination = null;
-        if (!kpxc.p && !kpxc.u && kpxcFields.combinations.length > 0) {
-            kpxc.u = _f(kpxcFields.combinations[0].username);
-            kpxc.p = _f(kpxcFields.combinations[0].password);
-            combination = kpxcFields.combinations[0];
-        }
-        if (kpxc.u) {
-            kpxc.setValueWithChange(kpxc.u, kpxc.credentials[0].login);
-            combination = await kpxcFields.getCombination('username', kpxc.u);
-        }
-        if (kpxc.p) {
-            kpxc.setValueWithChange(kpxc.p, kpxc.credentials[0].password);
-            combination = await kpxcFields.getCombination('password', kpxc.p);
-        }
+    // Combine inputs
+    kpxc.inputs = [...formInputs, ...pageInputs];
 
-        if (combination) {
-            const list = [];
-            if (kpxc.fillInStringFields(combination.fields, kpxc.credentials[0].stringFields, list)) {
-                kpxcForm.destroy(false, { 'password': list.list[0], 'username': list.list[1] });
-            }
-        }
+    // Combinations are already saved when identifying fields
+    if (kpxc.combinations.length === 0) {
+        sendMessage('show_default_browseraction');
+        return;
+    }
 
-        // Generate popup-list of usernames + descriptions
-        browser.runtime.sendMessage({
-            action: 'popup_login',
-            args: [ `${kpxc.credentials[0].login} (${kpxc.credentials[0].name})` ]
-        });
-    } else if (kpxc.credentials.length > 1 || (kpxc.credentials.length > 0 && (!kpxc.settings.autoFillSingleEntry || !autoFillInForSingle))) {
-        kpxc.preparePageForMultipleCredentials(kpxc.credentials);
+    await kpxcIcons.initIcons(kpxc.combinations);
+
+    if (kpxc.databaseState === DatabaseState.UNLOCKED) {
+        await kpxc.retrieveCredentials();
     }
 };
 
-kpxc.preparePageForMultipleCredentials = function(credentials) {
-    if (credentials.length === 0) {
+// Intializes the login popup list for choosing credentials
+kpxc.initLoginPopup = function() {
+    if (kpxc.credentials.length === 0) {
         return;
     }
 
-    function getLoginText(credential, withGroup) {
+    const getLoginText = function(credential, withGroup) {
         const group = (withGroup && credential.group) ? `[${credential.group}] ` : '';
         const visibleLogin = (credential.login.length > 0) ? credential.login : tr('credentialsNoUsername');
         const text = `${group}${credential.name} (${visibleLogin})`;
+
         if (credential.expired && credential.expired === 'true') {
             return `${text} [${tr('credentialExpired')}]`;
         }
+
         return text;
-    }
+    };
 
-    function getUniqueGroupCount(creds) {
+    const getUniqueGroupCount = function(creds) {
         const groups = creds.map(c => c.group || '');
         const uniqueGroups = new Set(groups);
         return uniqueGroups.size;
-    }
+    };
 
     // Add usernames + descriptions to autocomplete-list and popup-list
     const usernames = [];
     kpxcAutocomplete.elements = [];
-    const showGroupNameInAutocomplete = kpxc.settings.showGroupNameInAutocomplete && (getUniqueGroupCount(credentials) > 1);
-    for (let i = 0; i < credentials.length; i++) {
-        const loginText = getLoginText(credentials[i], showGroupNameInAutocomplete);
-        usernames.push(loginText);
+    const showGroupNameInAutocomplete = kpxc.settings.showGroupNameInAutocomplete && (getUniqueGroupCount(kpxc.credentials) > 1);
+
+    for (let i = 0; i < kpxc.credentials.length; i++) {
+        const loginText = getLoginText(kpxc.credentials[i], showGroupNameInAutocomplete);
+        usernames.push({ text: loginText, uuid: kpxc.credentials[i].uuid });
 
-        const item = {
+        kpxcAutocomplete.elements.push({
             label: loginText,
-            value: credentials[i].login,
+            value: kpxc.credentials[i].login,
+            uuid: kpxc.credentials[i].uuid,
             loginId: i
-        };
-        kpxcAutocomplete.elements.push(item);
+        });
     }
 
     // Generate popup-list of usernames + descriptions
-    browser.runtime.sendMessage({
-        action: 'popup_login',
-        args: usernames
-    });
-
-    // Initialize autocomplete for username fields
-    if (kpxc.settings.autoCompleteUsernames) {
-        for (const i of kpxcFields.combinations) {
-            // Both username and password fields are visible
-            if (_detectedFields >= 2) {
-                if (_f(i.username)) {
-                    kpxcAutocomplete.create(_f(i.username), false, kpxc.settings.autoSubmit);
-                }
-            } else if (_detectedFields === 1) {
-                if (_f(i.username)) {
-                    kpxcAutocomplete.create(_f(i.username), false, kpxc.settings.autoSubmit);
-                }
-                if (_f(i.password)) {
-                    kpxcAutocomplete.create(_f(i.password), false, kpxc.settings.autoSubmit);
-                }
-            }
-        }
-    }
+    sendMessage('popup_login', usernames);
 };
 
-// Returns the form that includes the inputField
-kpxc.getForm = function(inputField) {
-    if (inputField.form) {
-        return inputField.form;
+// Delete previously created Object if it exists. It will be replaced by an Array
+kpxc.initSitePreferences = function() {
+    if (kpxc.settings['sitePreferences'] !== undefined && kpxc.settings['sitePreferences'].constructor === Object) {
+        delete kpxc.settings['sitePreferences'];
     }
 
-    for (const f of document.forms) {
-        for (const e of f.elements) {
-            if (e === inputField) {
-                return f;
-            }
-        }
+    if (!kpxc.settings['sitePreferences']) {
+        kpxc.settings['sitePreferences'] = [];
     }
 };
 
-kpxc.getFormActionUrl = function(combination) {
-    if (!combination) {
-        return null;
-    }
-
-    const field = _f(combination.password) || _f(combination.username);
-    if (field === null) {
-        return null;
-    }
-
-    const form = kpxc.getForm(field);
-    let action = null;
+kpxc.passwordFilled = async function() {
+    return await sendMessage('password_get_filled');
+};
 
-    if (form && form.length > 0) {
-        action = form.action;
+// Prepares autocomplete and login popup ready for user interaction
+kpxc.prepareCredentials = async function() {
+    if (kpxc.credentials.length === 0) {
+        return;
     }
 
-    if (typeof(action) !== 'string' || action === '') {
-        action = document.location.origin + document.location.pathname;
+    if (kpxc.settings.autoFillSingleEntry && kpxc.credentials.length === 1) {
+        kpxc.fillFromAutofill();
+        return;
     }
 
-    return action;
+    kpxc.initLoginPopup();
+    kpxc.initAutocomplete();
 };
 
-kpxc.getFormActionUrlFromSingleInput = function(field) {
-    if (!field) {
-        return null;
-    }
-
-    let action = field.formAction;
-
-    if (typeof(action) !== 'string' || action === '') {
-        action = document.location.origin + document.location.pathname;
+/**
+ * Gets the credential list and shows the update banner
+ * @param {string} usernameValue    Submitted username
+ * @param {string} passwordValue    Submitted password
+ * @param {string} urlValue         URL of the page where password change was detected
+ * @param {Array} oldCredentials    Credentials saved from the password change page, if available
+ */
+kpxc.rememberCredentials = async function(usernameValue, passwordValue, urlValue, oldCredentials) {
+    const credentials = (oldCredentials !== undefined && oldCredentials.length > 0) ? oldCredentials : kpxc.credentials;
+    if (passwordValue === '') {
+        return undefined;
     }
 
-    return action;
-};
-
-const formButtonQuery = 'button[type=\'button\'], button[type=\'submit\'], input[type=\'button\'], button:not([type]), div[role=\'button\']';
+    let usernameExists = false;
+    for (const c of credentials) {
+        if (c.login === usernameValue && c.password === passwordValue) {
+            return false;
+        }
 
-// Get the form submit button instead if action URL is same as the page itself
-kpxc.getFormSubmitButton = function(form) {
-    const action = kpxc.submitUrl || form.action;
-    if (action.includes(document.location.origin + document.location.pathname)) {
-        for (const i of form.elements) {
-            if (i.type === 'submit') {
-                return i;
-            }
+        if (c.login === usernameValue) {
+            usernameExists = true;
+            break;
         }
     }
 
-    // Try to find another button. Select the first one.
-    const buttons = Array.from(form.querySelectorAll(formButtonQuery));
-    if (buttons.length > 0) {
-        return buttons[0];
+    const credentialsList = [];
+    for (const c of credentials) {
+        credentialsList.push({
+            login: c.login,
+            name: c.name,
+            uuid: c.uuid
+        });
     }
 
-    // Try to find similar buttons outside the form which are added via 'form' property
-    for (const e of form.elements) {
-        if ((e.nodeName === 'BUTTON' && e.type === 'button')
-            || (e.nodeName === 'BUTTON' && e.type === 'submit')
-            || (e.nodeName === 'INPUT' && e.type === 'button')
-            || (e.nodeName === 'BUTTON' && e.type === '')) {
-            return e;
+    const getUrl = function() {
+        let url = kpxc.settings.saveDomainOnlyNewCreds ? document.location.origin : document.location.href;
+        if (url.indexOf('?') > 0) {
+            url = url.substring(0, url.indexOf('?'));
+            if (url.length < document.location.origin.length) {
+                url = document.location.origin;
+            }
         }
-    }
 
-    return undefined;
-};
+        return url;
+    };
 
-kpxc.fillInCredentials = async function(combination, onlyPassword, suppressWarnings) {
-    const action = kpxc.getFormActionUrl(combination);
-    const u = _f(combination.username);
-    const p = _f(combination.password);
+    urlValue = urlValue || getUrl();
 
-    if (combination.isNew) {
-        // Initialize form-submit for remembering credentials
-        const fieldId = combination.password || combination.username;
-        const field = _f(fieldId);
-        if (field) {
-            const form = kpxc.getForm(field);
-            if (form && form.length > 0) {
-                kpxcForm.init(form, combination);
+    // Set usernameValue to the first one in the list, or the selected entry
+    if (usernameValue === '') {
+        if (credentialsList.length === 1) {
+            usernameValue = credentialsList[0].login;
+        } else if (credentialsList.length > 1) {
+            const index = await sendMessage('page_get_login_id');
+            if (index >= 0) {
+                usernameValue = credentialsList[index].login;
             }
         }
     }
 
-    if (u) {
-        kpxc.u = u;
-    }
-    if (p) {
-        kpxc.p = p;
-    }
-
-    if (kpxc.url === document.location.href && kpxc.submitUrl === action && kpxc.credentials.length > 0) {
-        kpxc.fillIn(combination, onlyPassword, suppressWarnings);
-    } else {
-        kpxc.url = document.location.href;
-        kpxc.submitUrl = action;
-
-        const credentials = await browser.runtime.sendMessage({
-            action: 'retrieve_credentials',
-            args: [ kpxc.url, kpxc.submitUrl, true ] // Sets triggerUnlock to true
-        });
+    // Show the Credential Banner
+    kpxcBanner.create({
+        username: usernameValue,
+        password: passwordValue,
+        url: urlValue,
+        usernameExists: usernameExists,
+        list: credentialsList
+    });
 
-        await kpxc.retrieveCredentialsCallback(credentials, true);
-        kpxc.fillIn(combination, onlyPassword, suppressWarnings);
-    }
+    return true;
 };
 
-kpxc.fillInFromActiveElement = async function(suppressWarnings, passOnly = false) {
+// Save credentials triggered fron the context menu
+kpxc.rememberCredentialsFromContextMenu = async function() {
     const el = document.activeElement;
-    if (el.tagName.toLowerCase() !== 'input') {
-        if (kpxcFields.combinations.length > 0) {
-            kpxc.fillInCredentials(kpxcFields.combinations[0], passOnly, suppressWarnings);
-
-            // Focus to the input field
-            const field = _f(passOnly ? kpxcFields.combinations[0].password : kpxcFields.combinations[0].username);
-            if (field) {
-                field.focus();
-            }
-        }
+    if (el.nodeName !== 'INPUT') {
         return;
     }
 
-    kpxcFields.setUniqueId(el);
-    const fieldId = kpxcFields.prepareId(el.getAttribute('data-kpxc-id'));
-    let combination = null;
-    if (el.getAttribute('type') === 'password') {
-        combination = await kpxcFields.getCombination('password', fieldId);
-    } else {
-        combination = await kpxcFields.getCombination('username', fieldId);
+    const type = el.getAttribute('type');
+    const combination = await kpxcFields.getCombination(el, (type === 'password' ? type : 'username'));
+    const usernameValue = combination.username ? combination.username.value : '';
+    const passwordValue = combination.password ? combination.password.value : '';
+
+    const result = await kpxc.rememberCredentials(usernameValue, passwordValue);
+    if (result === undefined) {
+        kpxcUI.createNotification('error', tr('rememberNoPassword'));
+        return;
     }
 
-    if (passOnly) {
-        if (!_f(combination.password)) {
-            kpxcUI.createNotification('warning', tr('fieldsNoPasswordField'));
-            return;
-        }
+    if (!result) {
+        kpxcUI.createNotification('warning', tr('rememberCredentialsExists'));
     }
+};
 
-    delete combination.loginId;
+// The basic function for retrieving credentials from KeePassXC
+kpxc.retrieveCredentials = async function() {
+    kpxc.url = document.location.href;
+    kpxc.submitUrl = kpxc.getFormActionUrl(kpxc.combinations[0]);
 
-    kpxc.fillInCredentials(combination, passOnly, suppressWarnings);
+    if (kpxc.settings.autoRetrieveCredentials && kpxc.url && kpxc.submitUrl) {
+        await kpxc.retrieveCredentialsCallback(await sendMessage('retrieve_credentials', [ kpxc.url, kpxc.submitUrl ]));
+    }
 };
 
-kpxc.fillInFromActiveElementTOTPOnly = async function(target) {
-    const el = target || document.activeElement;
-    kpxcFields.setUniqueId(el);
-    const fieldId = kpxcFields.prepareId(el.getAttribute('data-kpxc-id'));
+// Handles credentials from 'retrieve_credentials' response
+kpxc.retrieveCredentialsCallback = async function(credentials) {
+    _called.retrieveCredentials = true;
+    if (credentials && credentials.length > 0) {
+        kpxc.credentials = credentials;
+        await kpxc.prepareCredentials();
+    }
 
-    const index = await browser.runtime.sendMessage({
-        action: 'page_get_login_id'
-    });
+    // Retrieve submitted credentials if available
+    const creds = await sendMessage('page_get_submitted');
+    if (creds && creds.submitted) {
+        await sendMessage('page_clear_submitted');
+        kpxc.rememberCredentials(creds.username, creds.password, creds.url, creds.oldCredentials);
+    }
+};
 
-    if (index >= 0 && kpxc.credentials[index]) {
-        // Check the value from stringFields (to be removed)
-        const currentField = _fs(fieldId);
-        if (kpxc.credentials[index].stringFields && kpxc.credentials[index].stringFields.length > 0) {
-            const stringFields = kpxc.credentials[index].stringFields;
-            for (const s of stringFields) {
-                const val = s['KPH: {TOTP}'];
-                if (val) {
-                    kpxc.setValue(currentField, val);
-                }
-            }
-        } else if (kpxc.credentials[index].totp && kpxc.credentials[index].totp.length > 0) {
-            kpxc.setValue(currentField, kpxc.credentials[index].totp);
+// If credentials are not received, request them again
+kpxc.receiveCredentialsIfNecessary = async function() {
+    if (kpxc.credentials.length === 0 && !_called.retrieveCredentials) {
+        if (!kpxc.url) {
+            kpxc.url = document.location.href;
+        }
+
+        // Sets triggerUnlock to true
+        const credentials = await sendMessage('retrieve_credentials', [ kpxc.url, kpxc.submitUrl, true ]);
+        if (credentials.length === 0) {
+            return [];
         }
+
+        // If the database was locked, this is scope never met. In these cases the response is met at kpxc.detectDatabaseChange
+        await sendMessage('page_set_manual_fill', ManualFill.NONE);
+        await kpxc.retrieveCredentialsCallback(credentials);
+        return credentials;
     }
+
+    return kpxc.credentials;
+};
+
+kpxc.setPasswordFilled = async function(state) {
+    await sendMessage('password_set_filled', state);
 };
 
+// Special handling for settings value to select element
 kpxc.setValue = function(field, value) {
     if (field.matches('select')) {
         value = value.toLowerCase().trim();
         const options = field.querySelectorAll('option');
+
         for (const o of options) {
             if (o.textContent.toLowerCase().trim() === value) {
                 kpxc.setValueWithChange(field, o.value);
                 return false;
             }
         }
-    } else {
-        kpxc.setValueWithChange(field, value);
-    }
-};
-
-kpxc.fillInStringFields = function(fields, stringFields, filledInFields) {
-    let filledIn = false;
 
-    filledInFields.list = [];
-    if (fields && stringFields && fields.length > 0 && stringFields.length > 0) {
-        for (let i = 0; i < fields.length; i++) {
-            const currentField = _fs(fields[i]);
-            const stringFieldValue = Object.values(stringFields[i]);
-            if (currentField && stringFieldValue[0]) {
-                kpxc.setValue(currentField, stringFieldValue[0]);
-                filledInFields.list.push(fields[i]);
-                filledIn = true;
-            }
-        }
+        return;
     }
 
-    return filledIn;
+    kpxc.setValueWithChange(field, value);
 };
 
+// Sets a new value to input field and triggers necessary events
 kpxc.setValueWithChange = function(field, value) {
-    if (kpxc.settings.respectMaxLength === true) {
-        const attributeMaxlength = field.getAttribute('maxlength');
-        if (attributeMaxlength && !isNaN(attributeMaxlength) && attributeMaxlength > 0) {
-            value = value.substr(0, attributeMaxlength);
-        }
-    }
-
     field.value = value;
     field.dispatchEvent(new Event('input', { 'bubbles': true }));
     field.dispatchEvent(new Event('change', { 'bubbles': true }));
+    field.dispatchEvent(new KeyboardEvent('keydown', { bubbles: true, cancelable: false, key: '', char: '' }));
+    field.dispatchEvent(new KeyboardEvent('keypress', { bubbles: true, cancelable: false, key: '', char: '' }));
+    field.dispatchEvent(new KeyboardEvent('keyup', { bubbles: true, cancelable: false, key: '', char: '' }));
 };
 
-kpxc.fillWithSpecificLogin = async function(id) {
-    if (kpxc.credentials[id]) {
-        let combination = null;
-        if (kpxc.u) {
-            kpxc.setValueWithChange(kpxc.u, kpxc.credentials[id].login);
-            combination = await kpxcFields.getCombination('username', kpxc.u);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: id
-            });
-            kpxc.u.focus();
-        }
-        if (kpxc.p) {
-            kpxc.setValueWithChange(kpxc.p, kpxc.credentials[id].password);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: id
-            });
-            combination = await kpxcFields.getCombination('password', kpxc.p);
+// Returns true if site is ignored
+kpxc.siteIgnored = async function(condition) {
+    kpxc.initSitePreferences();
+
+    if (kpxc.settings.sitePreferences) {
+        let currentLocation;
+        try {
+            currentLocation = window.top.location.href;
+        } catch (err) {
+            // Cross-domain security error inspecting window.top.location.href.
+            // This catches an error when an iframe is being accessed from another (sub)domain -> use the iframe URL instead.
+            currentLocation = window.self.location.href;
         }
 
-        const list = [];
-        if (kpxc.fillInStringFields(combination.fields, kpxc.credentials[id].stringFields, list)) {
-            kpxcForm.destroy(false, { 'password': list.list[0], 'username': list.list[1] });
+        const currentSetting = condition || IGNORE_FULL;
+        for (const site of kpxc.settings.sitePreferences) {
+            if (siteMatch(site.url, currentLocation) || site.url === currentLocation) {
+                if (site.ignore === currentSetting) {
+                    return true;
+                }
+
+                kpxc.singleInputEnabledForPage = site.usernameOnly;
+            }
         }
+    }
 
-        kpxcAutocomplete.closeList();
+    return false;
+};
+
+// Updates database status and icons when tab is activated again
+kpxc.triggerActivatedTab = async function() {
+    await kpxc.updateDatabaseState();
+    kpxcIcons.switchIcons();
+
+    if (kpxc.databaseState === DatabaseState.UNLOCKED && kpxc.credentials.length === 0) {
+        await kpxc.retrieveCredentials();
+    } else if (kpxc.credentials.length > 0) {
+        kpxc.initLoginPopup();
     }
 };
 
-kpxc.fillIn = function(combination, onlyPassword, suppressWarnings) {
-    // No credentials available
-    if (kpxc.credentials.length === 0 && !suppressWarnings) {
-        kpxcUI.createNotification('error', tr('credentialsNoLoginsFound'));
+// Updates the database state to the content script
+kpxc.updateDatabaseState = async function() {
+    const res = await sendMessage('get_status', [ true ]);
+
+    if (!res.keePassXCAvailable) {
+        kpxc.databaseState = DatabaseState.DISCONNECTED;
         return;
     }
 
-    let skipAutoSubmit = false;
-    const uField = _f(combination.username);
-    const pField = _f(combination.password);
-
-    // Exactly one pair of credentials available
-    if (kpxc.credentials.length === 1) {
-        let filledIn = false;
+    kpxc.databaseState = res.databaseClosed ? DatabaseState.LOCKED : DatabaseState.UNLOCKED;
+};
 
-        if (kpxc.credentials[0].skipAutoSubmit !== undefined) {
-            skipAutoSubmit = kpxc.credentials[0].skipAutoSubmit === 'true';
-        }
 
-        if (uField && (!onlyPassword || _singleInputEnabledForPage)) {
-            kpxc.setValueWithChange(uField, kpxc.credentials[0].login);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: 0
-            });
-            filledIn = true;
-        }
-        if (pField) {
-            pField.setAttribute('type', 'password');
-            kpxc.setValueWithChange(pField, kpxc.credentials[0].password);
-            pField.setAttribute('unchanged', true);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: 0
-            });
-            filledIn = true;
-            kpxc.setPasswordFilled(true);
-        }
+/**
+ * @Object kpxcObserverHelper
+ * MutationObserver handler for dynamically added input fields.
+ */
+const kpxcObserverHelper = {};
+kpxcObserverHelper.ignoredNodeNames = [ 'g', 'path', 'svg', 'A', 'HEAD', 'HTML', 'LABEL', 'LINK', 'SCRIPT', 'SPAN', 'VIDEO' ];
+
+kpxcObserverHelper.ignoredNodeTypes = [
+    Node.ATTRIBUTE_NODE,
+    Node.TEXT_NODE,
+    Node.CDATA_SECTION_NODE,
+    Node.PROCESSING_INSTRUCTION_NODE,
+    Node.COMMENT_NODE,
+    Node.DOCUMENT_TYPE_NODE,
+    Node.NOTATION_NODE
+];
 
-        const list = [];
-        if (kpxc.fillInStringFields(combination.fields, kpxc.credentials[0].stringFields, list)) {
-            kpxcForm.destroy(false, { 'password': list.list[0], 'username': list.list[1] });
-            filledIn = true;
-        }
+kpxcObserverHelper.inputTypes = [
+    'text',
+    'email',
+    'password',
+    'tel',
+    'number',
+    'username', // Note: Not a standard
+    undefined, // Input field can be without any type. Include this and null to the list.
+    null
+];
 
-        if (!filledIn) {
-            if (!suppressWarnings) {
-                kpxcUI.createNotification('error', tr('fieldsFill'));
-            }
-            return;
-        }
-    } else if (combination.loginId !== undefined && kpxc.credentials[combination.loginId]) {
-        // Specific login ID given
-        let filledIn = false;
+// Define what element should be observed by the observer
+// and what types of mutations trigger the callback
+kpxcObserverHelper.observerConfig = {
+    subtree: true,
+    attributes: true,
+    childList: true,
+    characterData: true,
+    attributeFilter: [ 'style', 'class' ]
+};
 
-        if (kpxc.credentials[0].skipAutoSubmit !== undefined) {
-            skipAutoSubmit = kpxc.credentials[combination.loginId].skipAutoSubmit === 'true';
-        }
+// Stores mutation style to an cache array
+kpxcObserverHelper.cacheStyle = function(mut, styleMutations) {
+    if (mut.attributeName !== 'style') {
+        return;
+    }
 
-        if (uField && (!onlyPassword || _singleInputEnabledForPage)) {
-            kpxc.setValueWithChange(uField, kpxc.credentials[combination.loginId].login);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: combination.loginId
-            });
-            filledIn = true;
-        }
+    // If the target is inside a form we are monitoring, calculate the CSS style for better compatibility.
+    // getComputedStyle() is very slow, so we cannot do that for every style target.
+    let style = mut.target.style;
+    if (kpxcForm.formIdentified(mut.target.parentNode)) {
+        style = getComputedStyle(mut.target);
+    }
 
-        if (pField) {
-            kpxc.setValueWithChange(pField, kpxc.credentials[combination.loginId].password);
-            pField.setAttribute('unchanged', true);
-            browser.runtime.sendMessage({
-                action: 'page_set_login_id', args: combination.loginId
+    if (style.display || style.zIndex) {
+        if (!styleMutations.some(m => m.target === mut.target)) {
+            styleMutations.push({
+                target: mut.target,
+                display: style.display,
+                zIndex: style.zIndex
             });
-            filledIn = true;
-            kpxc.setPasswordFilled(true);
-        }
-
-        const list = [];
-        if (kpxc.fillInStringFields(combination.fields, kpxc.credentials[combination.loginId].stringFields, list)) {
-            kpxcForm.destroy(false, { 'password': list.list[0], 'username': list.list[1] });
-            filledIn = true;
-        }
-
-        if (!filledIn) {
-            if (!suppressWarnings) {
-                kpxcUI.createNotification('error', tr('fieldsFill'));
+        } else {
+            const currentStyle = styleMutations.find(m => m.target === mut.target);
+            if (currentStyle
+                && (currentStyle.display !== style.display
+                || currentStyle.zIndex !== style.zIndex)) {
+                currentStyle.display = style.display;
+                currentStyle.zIndex = style.zIndex;
             }
-            return;
         }
-    } else { // Multiple credentials available
-        // Check if only one password for given username exists
-        let countPasswords = 0;
-
-        if (uField) {
-            let valPassword = '';
-            let valUsername = '';
-            let valStringFields = [];
-            const valQueryUsername = uField.value.toLowerCase();
-
-            // Find passwords to given username (even those with empty username)
-            for (const c of kpxc.credentials) {
-                if (c.login.toLowerCase() === valQueryUsername) {
-                    countPasswords += 1;
-                    valPassword = c.password;
-                    valUsername = c.login;
-                    valStringFields = c.stringFields;
-
-                    if (c.skipAutoSubmit !== undefined) {
-                        skipAutoSubmit = c.skipAutoSubmit === 'true';
-                    }
-                }
-            }
+    }
+};
 
-            // For the correct notification message: 0 = no logins, X > 1 = too many logins
-            if (countPasswords === 0) {
-                countPasswords = kpxc.credentials.length;
-            }
+// Gets input fields from the target
+kpxcObserverHelper.getInputs = function(target, ignoreVisibility = false) {
+    // Ignores target element if it's not an element node
+    if (kpxcObserverHelper.ignoredNode(target)) {
+        return [];
+    }
 
-            // Only one mapping username found
-            if (countPasswords === 1) {
-                if (!onlyPassword) {
-                    kpxc.setValueWithChange(uField, valUsername);
-                }
+    // Filter out any input fields with type 'hidden' right away
+    const inputFields = [];
+    Array.from(target.getElementsByTagName('input')).forEach(e => {
+        if (e.type !== 'hidden' && !e.disabled && !kpxcObserverHelper.alreadyIdentified(e)) {
+            inputFields.push(e);
+        }
+    });
 
-                if (pField) {
-                    kpxc.setValueWithChange(pField, valPassword);
-                    pField.setAttribute('unchanged', true);
-                    kpxc.setPasswordFilled(true);
-                }
+    if (inputFields.length === 0) {
+        return [];
+    }
 
-                const list = [];
-                if (kpxc.fillInStringFields(combination.fields, valStringFields, list)) {
-                    kpxcForm.destroy(false, { 'password': list.list[0], 'username': list.list[1] });
-                }
-            }
+    // Do not allow more visible inputs than _maximumInputs (default value: 100) -> return the first 100
+    if (inputFields.length > _maximumInputs) {
+        return inputFields.slice(0, _maximumInputs);
+    }
 
-            // User has to select correct credentials by himself
-            if (countPasswords > 1) {
-                if (!suppressWarnings) {
-                    const target = onlyPassword ? pField : uField;
-                    if (!target) {
-                        return;
-                    }
-
-                    if (kpxcAutocomplete.started) {
-                        kpxcAutocomplete.showList(target);
-                    } else {
-                        kpxcAutocomplete.create(target, true, kpxc.settings.autoSubmit);
-                    }
-                    target.focus();
-                }
-                return;
-            } else if (countPasswords < 1) {
-                if (!suppressWarnings) {
-                    kpxcUI.createNotification('error', tr('credentialsNoUsernameFound'));
-                }
-                return;
-            }
-        } else {
-            if (!suppressWarnings) {
-                const target = onlyPassword ? pField : uField;
-                if (!target) {
-                    return;
-                }
+    // Only include input fields that match with kpxcObserverHelper.inputTypes
+    const inputs = [];
+    for (const field of inputFields) {
+        if (!ignoreVisibility && !kpxcFields.isVisible(field)) {
+            continue;
+        }
 
-                if (kpxcAutocomplete.started) {
-                    kpxcAutocomplete.showList(target);
-                } else {
-                    kpxcAutocomplete.create(target, true, kpxc.settings.autoSubmit);
-                }
-                target.focus();
-                return;
-            }
+        const type = field.getLowerCaseAttribute('type');
+        if (kpxcObserverHelper.inputTypes.includes(type)) {
+            inputs.push(field);
         }
     }
 
-    // Close autocomplete menu after fill
-    kpxcAutocomplete.closeList();
+    return inputs;
+};
 
-    // Auto-submit
-    if (kpxc.settings.autoSubmit && !skipAutoSubmit) {
-        const form = kpxc.u.form || kpxc.p.form;
-        const submitButton = kpxc.getFormSubmitButton(form);
-        if (submitButton !== undefined) {
-            submitButton.click();
-        } else {
-            form.submit();
-        }
-    }
+// Checks if the input field has already identified at page load
+kpxcObserverHelper.alreadyIdentified = function(target) {
+    return kpxc.inputs.some(e => e === target);
 };
 
-kpxc.contextMenuRememberCredentials = async function() {
-    const el = document.activeElement;
-    if (el.tagName.toLowerCase() !== 'input') {
+// Adds elements to a monitor array. Identifies the input fields.
+kpxcObserverHelper.handleObserverAdd = async function(target) {
+    if (kpxcObserverHelper.ignoredElement(target)) {
         return;
     }
 
-    kpxcFields.setUniqueId(el);
-    const fieldId = kpxcFields.prepareId(el.getAttribute('data-kpxc-id'));
-    let combination = null;
-    if (el.getAttribute('type') === 'password') {
-        combination = await kpxcFields.getCombination('password', fieldId);
-    } else {
-        combination = await kpxcFields.getCombination('username', fieldId);
+    // Sometimes the settings haven't been loaded before new input fields are detected
+    if (Object.keys(kpxc.settings).length === 0) {
+        kpxc.init();
+        return;
     }
 
-    let usernameValue = '';
-    let passwordValue = '';
+    const inputs = kpxcObserverHelper.getInputs(target);
+    if (inputs.length === 0) {
+        return;
+    }
 
-    const usernameField = _f(combination.username);
-    const passwordField = _f(combination.password);
+    await kpxc.initCombinations(inputs);
+    await kpxcIcons.initIcons(kpxc.combinations);
 
-    if (usernameField) {
-        usernameValue = usernameField.value;
+    if (kpxc.databaseState === DatabaseState.UNLOCKED && _called.retrieveCredentials === false) {
+        await kpxc.retrieveCredentials();
     }
+};
 
-    if (passwordField) {
-        passwordValue = passwordField.value;
+// Removes monitored elements
+kpxcObserverHelper.handleObserverRemove = function(target) {
+    if (kpxcObserverHelper.ignoredElement(target)) {
+        return;
     }
 
-    const result = await kpxc.rememberCredentials(usernameValue, passwordValue);
-    if (result === undefined) {
-        kpxcUI.createNotification('error', tr('rememberNoPassword'));
+    const inputs = kpxcObserverHelper.getInputs(target, true);
+    if (inputs.length === 0) {
         return;
     }
 
-    if (!result) {
-        kpxcUI.createNotification('warning', tr('rememberCredentialsExists'));
-    }
+    kpxcIcons.deleteHiddenIcons();
 };
 
-/**
- * Gets the credential list and shows the update banner
- * @param {string} usernameValue    Submitted username
- * @param {string} passwordValue    Submitted password
- * @param {string} urlValue         URL of the page where password change was detected
- * @param {Array} oldCredentials    Credentials saved from the password change page, if available
- */
-kpxc.rememberCredentials = async function(usernameValue, passwordValue, urlValue, oldCredentials) {
-    const credentials = (oldCredentials !== undefined && oldCredentials.length > 0) ? oldCredentials : kpxc.credentials;
-
-    // No password given or field cleaned by a site-running script
-    // --> no password to save
-    if (passwordValue === '') {
-        return undefined;
+// Handles CSS transitionend event
+kpxcObserverHelper.handleTransitionEnd = function(e) {
+    if (!e.isTrusted) {
+        return;
     }
 
-    let usernameExists = false;
-    let nothingChanged = false;
-
-    for (const c of credentials) {
-        if (c.login === usernameValue && c.password === passwordValue) {
-            nothingChanged = true;
-            break;
-        }
+    kpxcObserverHelper.handleObserverAdd(e.currentTarget);
+};
 
-        if (c.login === usernameValue) {
-            usernameExists = true;
-        }
+// Returns true if element should be ignored
+kpxcObserverHelper.ignoredElement = function(target) {
+    if (kpxcObserverHelper.ignoredNode(target)) {
+        return true;
     }
 
-    if (!nothingChanged) {
-        if (!usernameExists) {
-            for (const c of credentials) {
-                if (c.login === usernameValue) {
-                    usernameExists = true;
-                    break;
-                }
-            }
-        }
-        const credentialsList = [];
-        for (const c of credentials) {
-            credentialsList.push({
-                login: c.login,
-                name: c.name,
-                uuid: c.uuid
-            });
-        }
-
-        let url = this.action;
-        if (!url) {
-            url = kpxc.settings.saveDomainOnlyNewCreds ? document.location.origin : document.location.href;
-            if (url.indexOf('?') > 0) {
-                url = url.substring(0, url.indexOf('?'));
-                if (url.length < document.location.origin.length) {
-                    url = document.location.origin;
-                }
-            }
-        }
-
-        urlValue = urlValue || url;
-
-        // Set usernameValue to the first one in the list, or the selected entry
-        if (usernameValue === '') {
-            if (credentialsList.length === 1) {
-                usernameValue = credentialsList[0].login;
-            } else if (credentialsList.length > 1) {
-                const index = await browser.runtime.sendMessage({
-                    action: 'page_get_login_id'
-                });
-
-                if (index >= 0) {
-                    usernameValue = credentialsList[index].login;
-                }
-            }
-        }
-
-        // Show the banner
-        const newCredentials = {
-            username: usernameValue,
-            password: passwordValue,
-            url: urlValue,
-            usernameExists: usernameExists,
-            list: credentialsList
-        };
-
-        kpxcBanner.create(newCredentials);
+    // Ignore elements that do not have a className (including SVG)
+    if (typeof target.className !== 'string') {
         return true;
     }
 
     return false;
 };
 
-kpxc.getSite = function(sites) {
-    if (!sites || sites.length === 0) {
-        return '';
-    }
-
-    let site = trimURL(sites[0]);
-    kpxc.initializeSitePreferences();
-
-    if (slashNeededForUrl(site)) {
-        site += '/';
-    }
+// Ignores all nodes that doesn't contain elements
+// Also ignore few Youtube-specific custom nodeNames
+kpxcObserverHelper.ignoredNode = function(target) {
+    if (kpxcObserverHelper.ignoredNodeTypes.some(e => e === target.nodeType)
+        || kpxcObserverHelper.ignoredNodeNames.some(e => e === target.nodeName)
+        || target.nodeName.startsWith('YTMUSIC')
+        || target.nodeName.startsWith('YT-')) {
+            return true;
+        }
 
-    return site;
+    return false;
 };
 
-kpxc.ignoreSite = async function(sites) {
-    const site = kpxc.getSite(sites);
+// Initializes MutationObserver
+kpxcObserverHelper.initObserver = async function() {
+    kpxc.observer = new MutationObserver(function(mutations, obs) {
+        if (document.visibilityState === 'hidden' || kpxcUI.mouseDown) {
+            return;
+        }
 
-    // Check if the site already exists
-    let siteExists = false;
-    for (const existingSite of kpxc.settings['sitePreferences']) {
-        if (existingSite.url === site) {
-            existingSite.ignore = IGNORE_NORMAL;
-            siteExists = true;
+        // Limit the maximum number of mutations
+        if (mutations.length > _maximumMutations) {
+            mutations = mutations.slice(0, _maximumMutations);
         }
-    }
 
-    if (!siteExists) {
-        kpxc.settings['sitePreferences'].push({
-            url: site,
-            ignore: IGNORE_NORMAL,
-            usernameOnly: false
-        });
-    }
+        let styleMutations = [];
+        for (const mut of mutations) {
+            if (kpxcObserverHelper.ignoredNode(mut.target)) {
+                continue;
+            }
 
-    await browser.runtime.sendMessage({
-        action: 'save_settings',
-        args: [ kpxc.settings ]
-    });
-};
+            // Cache style mutations. We only need the last style mutation of the target.
+            kpxcObserverHelper.cacheStyle(mut, styleMutations);
 
-kpxc.addToSitePreferences = async function(sites) {
-    kpxc.initializeSitePreferences();
+            if (mut.type === 'childList') {
+                if (mut.addedNodes.length > 0) {
+                    kpxcObserverHelper.handleObserverAdd(mut.addedNodes[0]);
+                } else if (mut.removedNodes.length > 0) {
+                    kpxcObserverHelper.handleObserverRemove(mut.removedNodes[0]);
+                }
+            } else if (mut.type === 'attributes' && mut.attributeName === 'class') {
+                // Only accept targets with forms
+                const forms = mut.target.nodeName === 'FORM' ? mut.target : mut.target.getElementsByTagName('form');
+                if (forms.length === 0) {
+                    continue;
+                }
 
-    // Returns a predefined URL for certain sites
-    const site = kpxcSites.definedURL(trimURL(window.top.location.href));
+                // Listen for possible CSS animations
+                mut.target.removeEventListener('transitionend', kpxcObserverHelper.handleTransitionEnd);
+                mut.target.addEventListener('transitionend', kpxcObserverHelper.handleTransitionEnd);
 
-    // Check if the site already exists -> update the current settings
-    let siteExists = false;
-    for (const existingSite of kpxc.settings['sitePreferences']) {
-        if (existingSite.url === site) {
-            existingSite.ignore = IGNORE_NOTHING;
-            existingSite.usernameOnly = true;
-            siteExists = true;
+                // There's an issue here. We cannot know for sure if the class attribute if added or removed.
+                kpxcObserverHelper.handleObserverAdd(mut.target);
+            }
         }
-    }
-
-    if (!siteExists) {
-        kpxc.settings['sitePreferences'].push({
-            url: site,
-            ignore: IGNORE_NOTHING,
-            usernameOnly: true
-        });
-    }
 
-    await browser.runtime.sendMessage({
-        action: 'save_settings',
-        args: [ kpxc.settings ]
+        // Handle cached style mutations
+        for (const styleMut of styleMutations) {
+            if (styleMut.display !== 'none' && styleMut.display !== '') {
+                kpxcObserverHelper.handleObserverAdd(styleMut.target);
+            } else {
+                kpxcObserverHelper.handleObserverRemove(styleMut.target);
+            }
+        }
     });
 
-    browser.runtime.sendMessage({
-        action: 'username_field_detected',
-        args: false
-    });
+    kpxc.observer.observe(document, kpxcObserverHelper.observerConfig);
 };
 
-// Delete previously created Object if it exists. It will be replaced by an Array
-kpxc.initializeSitePreferences = function() {
-    if (kpxc.settings['sitePreferences'] !== undefined && kpxc.settings['sitePreferences'].constructor === Object) {
-        delete kpxc.settings['sitePreferences'];
-    }
+MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
 
-    if (!kpxc.settings['sitePreferences']) {
-        kpxc.settings['sitePreferences'] = [];
-    }
-};
+/**
+ * Content script initialization.
+ */
+const initContentScript = async function() {
+    try {
+        const settings = await sendMessage('load_settings');
+        kpxc.settings = settings;
 
-kpxc.getDocumentLocation = function() {
-    return kpxc.settings.saveDomainOnly ? document.location.origin : document.location.href;
-};
+        if (await kpxc.siteIgnored()) {
+            return;
+        }
 
-// Sets the icons to corresponding database lock status
-kpxc.switchIcons = function() {
-    kpxcUsernameIcons.switchIcon(_databaseState);
-    kpxcPasswordIcons.switchIcon(_databaseState);
-    kpxcTOTPIcons.switchIcon(_databaseState);
-};
+        await kpxc.updateDatabaseState();
+        await kpxc.initCredentialFields();
 
-kpxc.deleteHiddenIcons = function() {
-    kpxcUsernameIcons.deleteHiddenIcons();
-    kpxcPasswordIcons.deleteHiddenIcons();
-    kpxcTOTPIcons.deleteHiddenIcons();
-};
+        if (kpxc.settings.useObserver) {
+            await kpxcObserverHelper.initObserver();
+        }
 
-kpxc.setPasswordFilled = function(state) {
-    browser.runtime.sendMessage({
-        action: 'password_set_filled',
-        args: state
-    });
-};
+        // Retrieve submitted credentials if available.
+        const [creds, redirectCount] = await Promise.all([
+            await sendMessage('page_get_submitted'),
+            await sendMessage('page_get_redirect_count')
+        ]);
 
-kpxc.passwordFilled = async function() {
-    return await browser.runtime.sendMessage({ action: 'password_get_filled' });
-};
+        if (creds && creds.submitted) {
+            // If username field is not set, wait for credentials in kpxc.retrieveCredentialsCallback.
+            if (!creds.username) {
+                return;
+            }
 
-kpxc.updateDatabaseState = async function() {
-    const res = await browser.runtime.sendMessage({
-        action: 'get_status',
-        args: [ true ]
-    });
+            if (redirectCount >= kpxc.settings.redirectAllowance) {
+                await sendMessage('page_clear_submitted');
+            }
 
-    if (!res.keePassXCAvailable) {
-        _databaseState = DatabaseState.DISCONNECTED;
-        return;
+            kpxc.rememberCredentials(creds.username, creds.password, creds.url, creds.oldCredentials);
+        }
+    } catch (err) {
+        console.log('initContentScript error: ', err);
     }
-
-    _databaseState = res.databaseClosed ? DatabaseState.LOCKED : DatabaseState.UNLOCKED;
 };
 
-const kpxcEvents = {};
-
-kpxcEvents.clearCredentials = function() {
-    kpxc.credentials = [];
-    kpxcAutocomplete.elements = [];
-    _called.retrieveCredentials = false;
+if (document.readyState === 'complete' || (document.readyState !== 'loading' && !document.documentElement.doScroll)) {
+    initContentScript();
+} else {
+    document.addEventListener('DOMContentLoaded', initContentScript);
+}
 
-    if (kpxc.settings.autoCompleteUsernames) {
-        for (const c of kpxcFields.combinations) {
-            const uField = _f(c.username);
-            if (uField) {
-                if (uField.classList.contains('ui-autocomplete-input')) {
-                    uField.autocomplete('destroy');
-                }
-            }
+// These are executed in each frame
+browser.runtime.onMessage.addListener(async function(req, sender) {
+    if ('action' in req) {
+        // Don't allow any actions if the site is ignored
+        if (await kpxc.siteIgnored()) {
+            return;
         }
-    }
-};
-
-kpxcEvents.triggerActivatedTab = async function() {
-    kpxc.init();
 
-    // initCredentialFields calls also "retrieve_credentials", to prevent it
-    // check of init() was already called
-    if (_called.initCredentialFields && (kpxc.url && kpxc.submitUrl) && kpxc.settings.autoRetrieveCredentials) {
-        _called.retrieveCredentials = true;
-        kpxc.retrieveCredentialsCallback(await browser.runtime.sendMessage({
-            action: 'retrieve_credentials',
-            args: [ kpxc.url, kpxc.submitUrl ]
-        }));
+        if (req.action === 'activated_tab') {
+            kpxc.triggerActivatedTab();
+        } else if (req.action === 'add_username_only_option') {
+            kpxc.addToSitePreferences();
+        } else if (req.action === 'check_database_hash' && 'hash' in req) {
+            kpxc.detectDatabaseChange(req);
+        } else if (req.action === 'choose_credential_fields') {
+            kpxcDefine.init();
+        } else if (req.action === 'clear_credentials') {
+            kpxc.clearAllFromPage();
+        } else if (req.action === 'fill_user_pass_with_specific_login') {
+            kpxc.fillFromPopup(req.id, req.uuid);
+        } else if (req.action === 'fill_username_password') {
+            sendMessage('page_set_manual_fill', ManualFill.BOTH);
+            await kpxc.receiveCredentialsIfNecessary();
+            kpxc.fillInFromActiveElement();
+        } else if (req.action === 'fill_password') {
+            sendMessage('page_set_manual_fill', ManualFill.PASSWORD);
+            await kpxc.receiveCredentialsIfNecessary();
+            kpxc.fillInFromActiveElement(true); // passOnly to true
+        } else if (req.action === 'fill_totp') {
+            await kpxc.receiveCredentialsIfNecessary();
+            kpxc.fillFromTOTP();
+        } else if (req.action === 'ignore_site') {
+            kpxc.ignoreSite(req.args);
+        } else if (req.action === 'redetect_fields') {
+            const response = await sendMessage('load_settings');
+            kpxc.settings = response;
+            kpxc.inputs = [];
+            kpxc.combinations = [];
+            kpxc.initCredentialFields();
+        } else if (req.action === 'remember_credentials') {
+            kpxc.rememberCredentialsFromContextMenu();
+        } else if (req.action === 'show_password_generator') {
+            kpxcPasswordDialog.trigger();
+        }
     }
-};
+});
diff --git a/keepassxc-browser/content/pwgen.js b/keepassxc-browser/content/pwgen.js
index 2fc8267..a9aa134 100644
--- a/keepassxc-browser/content/pwgen.js
+++ b/keepassxc-browser/content/pwgen.js
@@ -3,8 +3,8 @@
 const kpxcPasswordIcons = {};
 kpxcPasswordIcons.icons = [];
 
-kpxcPasswordIcons.newIcon = function(useIcons, field, inputs, pos, databaseState = DatabaseState.DISCONNECTED) {
-    kpxcPasswordIcons.icons.push(new PasswordIcon(useIcons, field, inputs, pos, databaseState));
+kpxcPasswordIcons.newIcon = function(field, databaseState = DatabaseState.DISCONNECTED) {
+    kpxcPasswordIcons.icons.push(new PasswordIcon(field, databaseState));
 };
 
 kpxcPasswordIcons.switchIcon = function(state) {
@@ -15,57 +15,38 @@ kpxcPasswordIcons.deleteHiddenIcons = function() {
     kpxcUI.deleteHiddenIcons(kpxcPasswordIcons.icons, 'kpxc-password-field');
 };
 
-
-class PasswordIcon extends Icon {
-    constructor(useIcons, field, inputs, pos, databaseState) {
-        super();
-        this.useIcons = useIcons;
-        this.databaseState = databaseState;
-
-        if (this.initField(field, inputs, pos)) {
-            kpxcUI.monitorIconPosition(this);
-        }
-    }
-}
-
-PasswordIcon.prototype.initField = function(field, inputs, pos) {
+kpxcPasswordIcons.isValid = function(field) {
     if (!field
         || field.readOnly
-        || field.offsetWidth < MINIMUM_INPUT_FIELD_WIDTH) {
+        || field.offsetWidth < MINIMUM_INPUT_FIELD_WIDTH
+        || kpxcIcons.hasIcon(field)
+        || !kpxcFields.isVisible(field)) {
         return false;
     }
 
-    if (field.getAttribute('kpxc-password-field')
-        || (field.hasAttribute('kpxc-defined') && field.getAttribute('kpxc-defined') !== 'password')) {
-        return false;
-    }
+    return true;
+};
 
-    field.setAttribute('kpxc-password-field', true);
 
-    if (this.useIcons) {
-        // Observer the visibility
-        if (this.observer) {
-            this.observer.observe(field);
-        }
-        this.createIcon(field);
-    }
+class PasswordIcon extends Icon {
+    constructor(field, databaseState = DatabaseState.DISCONNECTED) {
+        super();
+        this.databaseState = databaseState;
+        this.nextFieldExists = false;
 
-    this.inputField = field;
+        this.initField(field);
+        kpxcUI.monitorIconPosition(this);
+    }
+}
 
-    let found = false;
-    if (inputs) {
-        for (let i = pos + 1; i < inputs.length; i++) {
-            if (inputs[i] && inputs[i].getLowerCaseAttribute('type') === 'password') {
-                field.setAttribute('kpxc-pwgen-next-field-id', inputs[i].getAttribute('data-kpxc-id'));
-                field.setAttribute('kpxc-pwgen-next-is-password-field', (i === 0));
-                found = true;
-                break;
-            }
-        }
+PasswordIcon.prototype.initField = function(field) {
+    // Observer the visibility
+    if (this.observer) {
+        this.observer.observe(field);
     }
 
-    field.setAttribute('kpxc-pwgen-next-field-exists', found);
-    return true;
+    this.createIcon(field);
+    this.inputField = field;
 };
 
 PasswordIcon.prototype.createIcon = function(field) {
@@ -81,6 +62,7 @@ PasswordIcon.prototype.createIcon = function(field) {
             'offset': offset,
             'kpxc-pwgen-field-id': field.getAttribute('data-kpxc-id')
         });
+
     icon.style.zIndex = '10000000';
     icon.style.width = Pixels(size);
     icon.style.height = Pixels(size);
@@ -116,6 +98,8 @@ PasswordIcon.prototype.createIcon = function(field) {
 const kpxcPasswordDialog = {};
 kpxcPasswordDialog.created = false;
 kpxcPasswordDialog.icon = null;
+kpxcPasswordDialog.input = null;
+kpxcPasswordDialog.nextField = null;
 kpxcPasswordDialog.selected = null;
 kpxcPasswordDialog.startPosX = 0;
 kpxcPasswordDialog.startPosY = 0;
@@ -124,17 +108,6 @@ kpxcPasswordDialog.diffY = 0;
 kpxcPasswordDialog.dialog = null;
 kpxcPasswordDialog.titleBar = null;
 
-kpxcPasswordDialog.removeIcon = function(field) {
-    if (field.getAttribute('kpxc-password-field')) {
-        const pwgenIcons = document.querySelectorAll('.kpxc-pwgen-icon');
-        for (const i of pwgenIcons) {
-            if (i.getAttribute('kpxc-pwgen-field-id') === field.getAttribute('data-kpxc-id')) {
-                document.body.removeChild(i);
-            }
-        }
-    }
-};
-
 kpxcPasswordDialog.createDialog = function() {
     if (kpxcPasswordDialog.created) {
         // If database is open again, generate a new password right away
@@ -245,6 +218,15 @@ kpxcPasswordDialog.showDialog = function(field, icon) {
         return;
     }
 
+    kpxcPasswordDialog.input = field;
+
+    // Save next password field if found
+    if (kpxc.inputs.length > 0) {
+        const index = kpxc.inputs.indexOf(field);
+        const nextField = kpxc.inputs[index+1];
+        kpxcPasswordDialog.nextField = (nextField && nextField.getLowerCaseAttribute('type') === 'password') ? nextField : undefined;
+    }
+
     kpxcPasswordDialog.createDialog();
     initColorTheme(kpxcPasswordDialog.dialog);
     kpxcPasswordDialog.openDialog();
@@ -259,10 +241,6 @@ kpxcPasswordDialog.showDialog = function(field, icon) {
             kpxcPasswordDialog.dialog.style.top = Pixels(rect.top + rect.height);
             kpxcPasswordDialog.dialog.style.left = Pixels(rect.left);
         }
-
-        kpxcPasswordDialog.dialog.setAttribute('kpxc-pwgen-field-id', field.getAttribute('data-kpxc-id'));
-        kpxcPasswordDialog.dialog.setAttribute('kpxc-pwgen-next-field-id', field.getAttribute('kpxc-pwgen-next-field-id'));
-        kpxcPasswordDialog.dialog.setAttribute('kpxc-pwgen-next-is-password-field', field.getAttribute('kpxc-pwgen-next-is-password-field'));
     }
 };
 
@@ -275,9 +253,7 @@ kpxcPasswordDialog.generate = async function(e) {
         e.preventDefault();
     }
 
-    callbackGeneratedPassword(await browser.runtime.sendMessage({
-        action: 'generate_password'
-    }));
+    callbackGeneratedPassword(await sendMessage('generate_password'));
 };
 
 kpxcPasswordDialog.copy = function(e) {
@@ -290,35 +266,27 @@ kpxcPasswordDialog.copy = function(e) {
 };
 
 kpxcPasswordDialog.fill = function(e) {
-    if (!e.isTrusted) {
+    if (!e.isTrusted || !kpxcPasswordDialog.input) {
         return;
     }
 
     e.preventDefault();
 
-    // Use the active input field
-    const field = _f(kpxcPasswordDialog.dialog.getAttribute('kpxc-pwgen-field-id'));
-    if (field) {
-        const password = kpxcPasswordDialog.shadowSelector('.kpxc-pwgen-input');
-        if (field.getAttribute('maxlength')) {
-            if (password.value.length > field.getAttribute('maxlength')) {
-                const message = tr('passwordGeneratorErrorTooLong') + '\r\n'
-                                + tr('passwordGeneratorErrorTooLongCut') + '\r\n' + tr('passwordGeneratorErrorTooLongRemember');
-                message.style.whiteSpace = 'pre';
-                browser.runtime.sendMessage({
-                    action: 'show_notification',
-                    args: [ message ]
-                });
-                return;
-            }
+    const password = kpxcPasswordDialog.shadowSelector('.kpxc-pwgen-input');
+    if (kpxcPasswordDialog.input.getAttribute('maxlength')) {
+        if (password.value.length > kpxcPasswordDialog.input.getAttribute('maxlength')) {
+            const message = tr('passwordGeneratorErrorTooLong') + '\r\n'
+                            + tr('passwordGeneratorErrorTooLongCut') + '\r\n' + tr('passwordGeneratorErrorTooLongRemember');
+            message.style.whiteSpace = 'pre';
+            sendMessage('show_notification' [ message ]);
+            return;
         }
+    }
 
-        field.value = password.value;
-        const nextFieldId = field.getAttribute('kpxc-pwgen-next-field-id');
-        const nextField = $('input[data-kpxc-id=\'' + nextFieldId + '\']');
-        if (nextField) {
-            nextField.value = password.value;
-        }
+    kpxcPasswordDialog.input.value = password.value;
+
+    if (kpxcPasswordDialog.nextField) {
+        kpxcPasswordDialog.nextField.value = password.value;
     }
 };
 
diff --git a/keepassxc-browser/content/totp-field.js b/keepassxc-browser/content/totp-field.js
index e09595c..f811e79 100644
--- a/keepassxc-browser/content/totp-field.js
+++ b/keepassxc-browser/content/totp-field.js
@@ -3,6 +3,17 @@
 const ignoreRegex = /(zip|postal).*code/i;
 const ignoredTypes = [ 'email', 'password', 'username' ];
 
+const acceptedOTPFields = [
+    '2fa',
+    'auth',
+    'challenge',
+    'code',
+    'mfa',
+    'otp',
+    'token',
+    'twofactor'
+];
+
 var kpxcTOTPIcons = {};
 kpxcTOTPIcons.icons = [];
 
@@ -18,23 +29,22 @@ kpxcTOTPIcons.deleteHiddenIcons = function() {
     kpxcUI.deleteHiddenIcons(kpxcTOTPIcons.icons, 'kpxc-totp-field');
 };
 
+// Quick check for a valid TOTP field
+kpxcTOTPIcons.isAcceptedTOTPField = function(field) {
+    const id = field.getLowerCaseAttribute('id');
+    const name = field.getLowerCaseAttribute('name');
+    const autocomplete = field.getLowerCaseAttribute('autocomplete');
 
-class TOTPFieldIcon extends Icon {
-    constructor(field, databaseState = DatabaseState.DISCONNECTED, forced = false) {
-        super();
-        this.icon = null;
-        this.inputField = null;
-        this.databaseState = databaseState;
-
-        if (this.initField(field, forced)) {
-            kpxcUI.monitorIconPosition(this);
-        }
+    if (autocomplete === 'one-time-code' || acceptedOTPFields.some(f => (id && id.includes(f)) || (name && name.includes(f)))) {
+        return true;
     }
-}
 
-TOTPFieldIcon.prototype.initField = function(field, forced) {
-    if (!field) {
-        return;
+    return false;
+};
+
+kpxcTOTPIcons.isValid = function(field, forced) {
+    if (!field || !kpxcTOTPIcons.isAcceptedTOTPField(field)) {
+        return false;
     }
 
     if (!forced) {
@@ -56,8 +66,22 @@ TOTPFieldIcon.prototype.initField = function(field, forced) {
         }
     }
 
-    field.setAttribute('kpxc-totp-field', 'true');
+    return true;
+};
 
+class TOTPFieldIcon extends Icon {
+    constructor(field, databaseState = DatabaseState.DISCONNECTED, forced = false) {
+        super();
+        this.icon = null;
+        this.inputField = null;
+        this.databaseState = databaseState;
+
+        this.initField(field, forced);
+        kpxcUI.monitorIconPosition(this);
+    }
+}
+
+TOTPFieldIcon.prototype.initField = function(field, forced) {
     // Observer the visibility
     if (this.observer) {
         this.observer.observe(field);
@@ -65,7 +89,6 @@ TOTPFieldIcon.prototype.initField = function(field, forced) {
 
     this.createIcon(field);
     this.inputField = field;
-    return false;
 };
 
 TOTPFieldIcon.prototype.createIcon = function(field) {
@@ -97,7 +120,7 @@ TOTPFieldIcon.prototype.createIcon = function(field) {
 
         e.preventDefault();
         await kpxc.receiveCredentialsIfNecessary();
-        kpxc.fillInFromActiveElementTOTPOnly(field);
+        kpxc.fillFromTOTP(field);
     });
 
     kpxcUI.setIconPosition(icon, field);
diff --git a/keepassxc-browser/content/ui.js b/keepassxc-browser/content/ui.js
index a7e7c3a..2c70ab8 100644
--- a/keepassxc-browser/content/ui.js
+++ b/keepassxc-browser/content/ui.js
@@ -2,6 +2,12 @@
 
 const MINIMUM_INPUT_FIELD_WIDTH = 60;
 
+const DatabaseState = {
+    DISCONNECTED: 0,
+    LOCKED: 1,
+    UNLOCKED: 2
+};
+
 // jQuery style wrapper for querySelector()
 const $ = function(elem) {
     return document.querySelector(elem);
@@ -44,6 +50,8 @@ class Icon {
 }
 
 const kpxcUI = {};
+kpxcUI.bodyRect = document.body.getBoundingClientRect();
+kpxcUI.bodyStyle = getComputedStyle(document.body);
 kpxcUI.mouseDown = false;
 
 // Wrapper for creating elements
@@ -95,14 +103,12 @@ kpxcUI.calculateIconOffset = function(field, size) {
 
 kpxcUI.setIconPosition = function(icon, field) {
     const rect = field.getBoundingClientRect();
-    const bodyRect = document.body.getBoundingClientRect();
-    const bodyStyle = getComputedStyle(document.body);
     const size = (document.dir !== 'rtl') ? Number(icon.getAttribute('size')) : 0;
     const offset = kpxcUI.calculateIconOffset(field, size);
 
-    if (bodyStyle.position.toLowerCase() === 'relative') {
-        icon.style.top = Pixels(rect.top - bodyRect.top + document.scrollingElement.scrollTop + offset + 1);
-        icon.style.left = Pixels(rect.left - bodyRect.left + document.scrollingElement.scrollLeft + field.offsetWidth - size - offset);
+    if (kpxcUI.bodyStyle.position.toLowerCase() === 'relative') {
+        icon.style.top = Pixels(rect.top - kpxcUI.bodyRect.top + document.scrollingElement.scrollTop + offset + 1);
+        icon.style.left = Pixels(rect.left - kpxcUI.bodyRect.left + document.scrollingElement.scrollLeft + field.offsetWidth - size - offset);
     } else {
         icon.style.top = Pixels(rect.top + document.scrollingElement.scrollTop + offset + 1);
         icon.style.left = Pixels(rect.left + document.scrollingElement.scrollLeft + field.offsetWidth - size - offset);
@@ -110,11 +116,21 @@ kpxcUI.setIconPosition = function(icon, field) {
 };
 
 kpxcUI.deleteHiddenIcons = function(iconList, attr) {
+    const deletedIcons = [];
     for (const icon of iconList) {
         if (icon.inputField && !kpxcFields.isVisible(icon.inputField)) {
             const index = iconList.indexOf(icon);
             icon.removeIcon(attr);
             iconList.splice(index, 1);
+            deletedIcons.push(icon.inputField);
+        }
+    }
+
+    // Remove the same icons from kpxcIcons.icons array
+    for (const input of deletedIcons) {
+        const index = kpxcIcons.icons.findIndex(e => e.field === input);
+        if (index >= 0) {
+            kpxcIcons.icons.splice(index, 1);
         }
     }
 };
@@ -139,7 +155,7 @@ kpxcUI.updateFromIntersectionObserver = function(iconClass, entries) {
             // Wait for possible DOM animations
             setTimeout(() => {
                 kpxcUI.setIconPosition(iconClass.icon, entry.target);
-            }, 500);
+            }, 400);
         }
     }
 };
diff --git a/keepassxc-browser/content/username-field.js b/keepassxc-browser/content/username-field.js
index fc5e6b6..6074c1f 100644
--- a/keepassxc-browser/content/username-field.js
+++ b/keepassxc-browser/content/username-field.js
@@ -2,6 +2,7 @@
 
 const kpxcUsernameIcons = {};
 kpxcUsernameIcons.icons = [];
+kpxcUsernameIcons.detectedFields = [];
 
 kpxcUsernameIcons.newIcon = function(field, databaseState = DatabaseState.DISCONNECTED) {
     kpxcUsernameIcons.icons.push(new UsernameFieldIcon(field, databaseState));
@@ -15,6 +16,18 @@ kpxcUsernameIcons.deleteHiddenIcons = function() {
     kpxcUI.deleteHiddenIcons(kpxcUsernameIcons.icons, 'kpxc-username-field');
 };
 
+kpxcUsernameIcons.isValid = function(field) {
+    if (!field
+        || field.offsetWidth < MINIMUM_INPUT_FIELD_WIDTH
+        || field.readOnly
+        || kpxcIcons.hasIcon(field)
+        || !kpxcFields.isVisible(field)) {
+        return false;
+    }
+
+    return true;
+};
+
 
 class UsernameFieldIcon extends Icon {
     constructor(field, databaseState = DatabaseState.DISCONNECTED) {
@@ -23,14 +36,15 @@ class UsernameFieldIcon extends Icon {
         this.icon = null;
         this.inputField = null;
 
-        if (this.initField(field)) {
-            kpxcUI.monitorIconPosition(this);
-        }
+        this.initField(field);
+        kpxcUI.monitorIconPosition(this);
     }
 
     switchIcon(state) {
         if (!this.icon) {
             return;
+        } else {
+            this.observer.disconnect();
         }
 
         this.icon.classList.remove('lock', 'lock-moz', 'unlock', 'unlock-moz', 'disconnected', 'disconnected-moz');
@@ -40,18 +54,6 @@ class UsernameFieldIcon extends Icon {
 }
 
 UsernameFieldIcon.prototype.initField = function(field) {
-    if (!field
-        || field.offsetWidth < MINIMUM_INPUT_FIELD_WIDTH
-        || field.readOnly
-        || field.getAttribute('kpxc-username-field') === 'true'
-        || field.getAttribute('kpxc-totp-field') === 'true'
-        || (field.hasAttribute('kpxc-defined') && field.getAttribute('kpxc-defined') !== 'username')
-        || !kpxcFields.isVisible(field)) {
-        return false;
-    }
-
-    field.setAttribute('kpxc-username-field', 'true');
-
     // Observer the visibility
     if (this.observer) {
         this.observer.observe(field);
@@ -59,15 +61,9 @@ UsernameFieldIcon.prototype.initField = function(field) {
 
     this.createIcon(field);
     this.inputField = field;
-    return true;
 };
 
 UsernameFieldIcon.prototype.createIcon = function(target) {
-    // Remove any existing password generator icons from the input field
-    if (target.getAttribute('kpxc-password-field')) {
-        kpxcPasswordDialog.removeIcon(target);
-    }
-
     const field = target;
     const className = getIconClassName(this.databaseState);
 
@@ -124,20 +120,18 @@ const iconClicked = async function(field, icon) {
         return;
     }
 
-    const connected = await browser.runtime.sendMessage({ action: 'is_connected' });
+    const connected = await sendMessage('is_connected');
     if (!connected) {
         kpxcUI.createNotification('error', tr('errorNotConnected'));
         return;
     }
 
-    const databaseHash = await browser.runtime.sendMessage({ action: 'check_database_hash' });
+    const databaseHash = await sendMessage('check_database_hash');
     if (databaseHash === '') {
         // Triggers database unlock
-        _called.manualFillRequested = ManualFill.BOTH;
-        await browser.runtime.sendMessage({
-            action: 'get_database_hash',
-            args: [ false, true ] // Set triggerUnlock to true
-        });
+        await sendMessage('page_set_manual_fill', ManualFill.BOTH);
+        await sendMessage('get_database_hash', [ false, true ]); // Set triggerUnlock to true
+        field.focus();
     }
 
     if (icon.className.includes('unlock')) {
@@ -165,11 +159,6 @@ const getIconText = function(state) {
 };
 
 const fillCredentials = async function(field) {
-    const fieldId = field.getAttribute('data-kpxc-id');
-    kpxcFields.prepareId(fieldId);
-
-    const givenType = field.type === 'password' ? 'password' : 'username';
-    const combination = await kpxcFields.getCombination(givenType, fieldId);
-
-    kpxc.fillInCredentials(combination, givenType === 'password', false);
+    const combination = await kpxcFields.getCombination(field);
+    kpxc.fillFromUsernameIcon(combination);
 };
diff --git a/keepassxc-browser/global.js b/keepassxc-browser/global.js
index f2c392d..1044efd 100755
--- a/keepassxc-browser/global.js
+++ b/keepassxc-browser/global.js
@@ -32,6 +32,12 @@ const AssociatedAction = {
     CANCELED: 3
 };
 
+const ManualFill = {
+    NONE: 0,
+    PASSWORD: 1,
+    BOTH: 2
+};
+
 /**
  * Transforms a valid match pattern into a regular expression
  * which matches all URLs included by that pattern.
diff --git a/keepassxc-browser/manifest.json b/keepassxc-browser/manifest.json
index 60e7122..1eacae1 100755
--- a/keepassxc-browser/manifest.json
+++ b/keepassxc-browser/manifest.json
@@ -1,8 +1,8 @@
 {
     "manifest_version": 2,
     "name": "KeePassXC-Browser",
-    "version": "1.6.6",
-    "version_name": "1.6.6",
+    "version": "1.7.0",
+    "version_name": "1.7.0",
     "description": "__MSG_extensionDescription__",
     "author": "KeePassXC Team",
     "icons": {
diff --git a/keepassxc-browser/options/options.js b/keepassxc-browser/options/options.js
index 0fae4a0..79deb08 100644
--- a/keepassxc-browser/options/options.js
+++ b/keepassxc-browser/options/options.js
@@ -48,8 +48,6 @@ options.saveSetting = async function(name) {
     await browser.runtime.sendMessage({
         action: 'load_settings'
     });
-
-    return Promise.resolve();
 };
 
 options.saveSettings = async function() {
@@ -66,8 +64,6 @@ options.saveKeyRing = async function() {
     await browser.runtime.sendMessage({
         action: 'load_keyring'
     });
-
-    return Promise.resolve();
 };
 
 options.initGeneralSettings = function() {
@@ -175,10 +171,8 @@ options.initGeneralSettings = function() {
 
     $('#defaultGroupButton').click(async function() {
         const value = $('#defaultGroup').val();
-        if (value.length > 0) {
-            options.settings['defaultGroup'] = value;
-            await options.saveSettings();
-        }
+        options.settings['defaultGroup'] = (value.length > 0 ? value : '');
+        await options.saveSettings();
     });
 
     $('#defaultGroupButtonReset').click(async function() {
diff --git a/keepassxc-browser/popups/popup.js b/keepassxc-browser/popups/popup.js
index 9846708..bb626f8 100644
--- a/keepassxc-browser/popups/popup.js
+++ b/keepassxc-browser/popups/popup.js
@@ -93,7 +93,7 @@ $(async () => {
 
     $('#lock-database-button').click(async () => {
         statusResponse(await browser.runtime.sendMessage({
-            action: 'lock-database'
+            action: 'lock_database'
         }));
     });
 
diff --git a/keepassxc-browser/popups/popup_httpauth.js b/keepassxc-browser/popups/popup_httpauth.js
index 6d87397..b0383c6 100644
--- a/keepassxc-browser/popups/popup_httpauth.js
+++ b/keepassxc-browser/popups/popup_httpauth.js
@@ -33,7 +33,7 @@ $(async () => {
 
     $('#lock-database-button').click(function() {
         browser.runtime.sendMessage({
-            action: 'lock-database'
+            action: 'lock_database'
         }).then(statusResponse);
     });
 
diff --git a/keepassxc-browser/popups/popup_login.js b/keepassxc-browser/popups/popup_login.js
index 884471b..b79e8bf 100644
--- a/keepassxc-browser/popups/popup_login.js
+++ b/keepassxc-browser/popups/popup_login.js
@@ -8,15 +8,18 @@ $(async () => {
     if (tabs.length === 0) {
         return; // For example: only the background devtools or a popup are opened
     }
-    const tab = tabs[0];
 
+    const tab = tabs[0];
     const logins = global.page.tabs[tab.id].loginList;
     const ll = document.getElementById('login-list');
+
     for (let i = 0; i < logins.length; i++) {
+        const uuid = logins[i].uuid;
         const a = document.createElement('a');
-        a.textContent = logins[i];
+        a.textContent = logins[i].text;
         a.setAttribute('class', 'list-group-item');
         a.setAttribute('id', '' + i);
+
         a.addEventListener('click', (e) => {
             if (!e.isTrusted) {
                 return;
@@ -25,10 +28,13 @@ $(async () => {
             const id = e.target.id;
             browser.tabs.sendMessage(tab.id, {
                 action: 'fill_user_pass_with_specific_login',
-                id: Number(id)
+                id: Number(id),
+                uuid: uuid
             });
+
             close();
         });
+
         ll.appendChild(a);
     }
 
@@ -50,12 +56,13 @@ $(async () => {
                 }
             }
         });
+
         filter.focus();
     }
 
     $('#lock-database-button').click((e) => {
         browser.runtime.sendMessage({
-            action: 'lock-database'
+            action: 'lock_database'
         });
         $('#credentialsList').hide();
         $('#database-not-opened').show();
diff --git a/keepassxc-browser/popups/popup_multiple-fields.html b/keepassxc-browser/popups/popup_multiple-fields.html
deleted file mode 100644
index 24dc694..0000000
--- a/keepassxc-browser/popups/popup_multiple-fields.html
+++ /dev/null
@@ -1,39 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title data-i18n="popupTitle"></title>
-    <meta charset="UTF-8">
-    <link rel="stylesheet" href="../css/colors.css" />
-    <link rel="stylesheet" href="popup.css" />
-    <link rel="stylesheet" href="../bootstrap/bootstrap.min.css" />
-    <link rel="stylesheet" href="../fonts/fork-awesome.min.css" />
-    <script src="../browser-polyfill.min.js"></script>
-    <script src="../global.js"></script>
-    <script src="../bootstrap/jquery-3.4.1.min.js"></script>
-    <script src="../bootstrap/bootstrap.min.js"></script>
-    <script src="popup_functions.js"></script>
-    <script defer src="../translate.js"></script>
-  </head>
-  <body>
-    <div class="container">
-      <div id="settings" class="settings">
-        <button id="btn-options" class="btn btn-sm btn-success"><i class="fa fa-cog" aria-hidden="true"></i> <span data-i18n="popupSettingsText"></span></button>
-        <button id="btn-choose-credential-fields" class="btn btn-sm btn-warning"><i class="fa fa-list-alt" aria-hidden="true"></i> <span data-i18n="popupChooseCredentialsText"></span></button>
-        <button id="lock-database-button" class="btn btn-sm btn-danger" data-i18n="[title]lockDatabase"><i class="fa fa-lock" aria-hidden="true"></i></button>
-
-        <div id="update-available" class="alert alert-danger">
-          <span data-i18n="popupUpdateAvailable"></span>
-          <br />
-          <a target="_blank" class="alert-link" href="https://keepassxc.org/download"><span data-i18n="popupDownloadNewVersion"></span></a>.
-        </div>
-      </div>
-
-      <div>
-        <p>
-          <span data-i18n="popupMultiplePasswordFields"></span>
-          "<code><span data-i18n="contextMenuFillUsernameAndPassword"></span></code>", "<code><span data-i18n="contextMenuFillPassword"></span></code>"
-        </p>
-      </div>
-    </div>
-  </body>
-</html>