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Manage and customize your product experience with settings, add-ons, and more.

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Make Firefox your default browser on Windows

About Add-on Badges

Access AI chatbots in Firefox

Thunderbird and Junk / Spam Messages

Customize Firefox controls, buttons and toolbars

Refresh Firefox - reset add-ons and settings

Block generative AI features with Firefox AI controls

View site information with Page Info

Change Firefox options, preferences and settings

Watch DRM content on Firefox

How to set up Firefox Sync in Firefox for Android

Web Push notifications in Firefox

Firefox Translations

Import data from another browser

Firefox translation for Android

Control AI features in Firefox for Android

Compacting folders

Recover lost or missing Bookmarks

Manage my default search engines in Firefox for Android

Allow or block media autoplay in Firefox

Personalized extension recommendations

Scan QR codes in Firefox for iOS

On-device AI models in Firefox

Export Firefox bookmarks to an HTML file to back up or transfer bookmarks

Restore the Menu bar in Firefox

Manually back up and restore Firefox profile data

Filelink for Large Attachments

Restore bookmarks from backup or move them to another computer

Quick actions in the Firefox search bar

Setting Firefox as the default browser does not work - What to do

Connection settings in Firefox

Import settings and data into Thunderbird

JavaScript settings and preferences for interactive web pages

Bookmarks Toolbar - Display your favorite websites at the top of the Firefox window

Sponsors on the home page and New Tab page

Manage marketing data settings in Firefox for Android

Customize items on your Firefox New Tab page

Import bookmarks and other data from Google Chrome

Recommendations from Firefox

Automatically fill in credit and debit card payment methods data on web forms

Find and install extensions on Firefox for Android

Multi-Account Containers

Firefox's performance settings

Turn picture-in-picture mode controls on and off

Firefox Password Manager - Alerts for breached websites

Control AI features in Firefox for iOS

Thunderbird and Gmail

Manage your extensions using the extensions button in the toolbar

How do I use the Firefox spell checker?

Use Firefox in Full Screen mode

Signatures

Add the Search bar to your Firefox toolbar

Compact mode workaround in Firefox

Get started with the Mozilla VPN extension

Import Bookmarks from an HTML file

Message threading in Thunderbird - keep messages grouped by conversation

Automatically fill in your address on web forms

Profile Manager - Create and remove Thunderbird profiles

Global Privacy Control

Configure push email for Thunderbird for Android

Extension data collection

Import login and password data from a file

Control audio or video playback with your keyboard

How to restore a browsing session from backup

OAuth2 Authentication for Yahoo, AOL and ATT

Customize Firefox Home on iOS

Tips for assessing the safety of an extension

Legacy browser support extension for Windows

How to opt out of studies on Firefox for Android

Getting Started with the Thunderbird main window (Supernova and newer)

Why does Mozilla disable some add-ons from running in Firefox?

How to set the home page

Thunderbird add-ons - frequently asked questions

Manage notifications in Firefox for Android

Customize keyboard shortcuts in Firefox

How to change the Thunderbird layout

Appearance Panel - Layout, Message List, Card View, Table View, Sorting and Threading settings

Cannot remove an add-on (extension or theme)

Pop-up blocker settings, exceptions and troubleshooting

An extension changed my New Tab page or home page

Customize Date and Time formats in Thunderbird

Multi-Hop - Encrypt your data twice for enhanced security while using Mozilla VPN

How do I restore my tabs from last time?

FAQ Changing IMAP to POP

Customize the Firefox home screen

Add-ons in Firefox for iOS

The difference between IMAP and POP3

Importing Safari data into Firefox

Use bookmark folders to organize your bookmarks

Reset Firefox preferences to troubleshoot and fix problems

Use multiple profiles in Thunderbird

Scan QR codes in Firefox for Android

Gmail and Thunderbird for Android

Thunderbird and Exchange

Control whether Firefox automatically fills in forms

Usernames and passwords are not saved

Font size and zoom - increase the size of web pages

IMAP Synchronization

Add search engines in Firefox Focus for iOS

Firefox starts automatically when I restart Windows

Add trusted websites to your allow list in Firefox Focus

Manage extension shortcuts in Firefox

Set up Certificate Authorities (CAs) in Firefox

Setup your email account for using End-To-End Encryption

Change your location for a specific website

Translate webpages in Firefox for iOS

Configuration Options for Accounts

Switch from POP to IMAP account

Use Firefox in another language

Customize Firefox using AutoConfig

Dedicated profiles per Firefox installation

How to manage your camera and microphone permissions with Firefox

How to disable the Enterprise Roots preference

Firefox for Enterprise Kiosk mode

Manage Firefox with Microsoft Endpoint Manager (Intune)

How do I change my DNS settings?

How to disable or change the Thunderbird start page

Make Thunderbird the Default Mail Client

Use the Firefox Sidebar to access bookmarks, history, passwords and synced tabs

Uninstall Firefox for Android extensions

Customize Firefox using Group Policy (Windows)

Install themes to change the look of Thunderbird

Manage Firefox updates

Protect your container tabs with Mozilla VPN

Add a Firefox widget to your Home screen

View bookmarks on your home screen

How to automatically label your new email masks

Disable Mozilla VPN protection for a specific website

Make Firefox your default browser

Export bookmarks to Safari

Audio and video files in Firefox

Change the default language of Firefox for Android

How do I change to the desktop view in Firefox for Android?

Message List Columns

Thunderbird makes unrequested connections

How to reset the default user agent on Firefox

Installing an Add-on in Thunderbird

Manage saved passwords in Firefox for Android

Voice input in Firefox for Android

Change the default language on Firefox for iOS

Manage saved passwords in Firefox for iOS

Add a search engine to Firefox Focus for Android

Customize Firefox using policies.json

Feed reader replacements for Firefox

Assign shortcuts to search engines

Getting started with the Thunderbird main window

Collections in Firefox

Playing videos in Firefox for Android

How to opt out of studies on Firefox for iOS

Install the Firefox Relay extension on Firefox for desktop

Change your wallpaper in Firefox for Android

Change website appearance settings in Firefox

Recommended Firefox privacy and security settings for families

How do I change my Privacy features?

What languages is Mozilla VPN available in?

How to delete an email mask

Global Privacy Control in Firefox for Android

Get started with Thunderbird

Getting started with Thunderbird for Android

Manage your Monitor notifications

Use the sidebar to access tools and vertical tabs

How to search IMDB, Wikipedia and more from the address bar

Change the fonts and colors websites use

Block and unblock websites with parental controls on Firefox

Import Bookmarks and other data from Microsoft Edge

Manage file types and download actions in Firefox

Configuration Options for Attachments

Config Editor

How to Install and Use another Language in the Dictionary on Thunderbird

How to Subscribe to News Feeds and Blogs

How to Customize Toolbars

Maildir in Thunderbird

Manage Firefox search settings

Set Firefox as the default browser for iOS

Access your add-ons with a Mozilla account

Set a homepage in Firefox for iOS

Advanced panel - System, network, updates, and other advanced settings in Thunderbird

Set Firefox Focus as default browser on Android

Manage local site storage settings

Autocomplete web addresses in the URL bar in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

How to add the translate add-on to Firefox

Access hidden tabs in Firefox

Change themes in Firefox for iOS

Firefox Focus main Menu

Search suggestions in Firefox Focus for iOS

Drag and Drop errors with Firefox Launcher Process enabled and Windows UAC disabled - How to Fix

Firefox Browser welcome pages - helping you get more from Firefox products and services

Move the navigation bar to the top or bottom of the app in Firefox for Android

How to pin and unpin Firefox from the taskbar on Windows 10 and Windows 11

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

Manage optional permissions for Firefox extensions

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Automatically fill in credit card information on Firefox for Android

OpenPGP Recipient Alias Configuration

The language of the websites I visit changes when I turn Mozilla VPN on - What to do

Autocomplete settings in the Firefox Klar address bar

How file downloads are handled in Firefox

HTTPS-Only Mode in Firefox Focus for Android

How to move the address bar in Firefox for iOS

Change your wallpaper in Firefox for iOS

Enable light or dark mode in MDN

Manage your Mozilla account newsletter and email preferences

Site Permission Add-ons

Install the Firefox Relay extension in Firefox for Android

Turn off ads on MDN Plus

Thunderbird Matrix Chat FAQ

Firefox Suggest for Mobile

Add alt text to images in your PDFs using Firefox

Thunderbird Mobile Telemetry

Import settings and data into Thunderbird for Android

What to do if another extension interferes with the Mozilla VPN extension

Stop screen brightness from dimming in Thunderbird for Android

Thunderbird for Desktop and Thundermail

Harmful add-on protection

Restore the default Smart Bookmarks Folders

How to fix preferences that won't save

Changes to toolbars and window sizes are not saved

Change the program used to open email links

What to do if you can't download or save files

Restore previous session - Configure when Firefox shows your most recent tabs and windows

Firefox doesn't save web form entries

Tab preferences and settings

Share data with Mozilla to help improve Firefox

Closing multiple Tabs - option to disable warning

How to disable the built-in PDF viewer and use another viewer

Using Dark Theme in Firefox for Android

How do I quit Firefox for Android?

Creating a Newsgroup Account

Names but no Email Addresses are Displayed

Configuration Options for Identity

Configuration Options for Tags

Certificates

Block a sender

Installing Thunderbird on Ubuntu Linux

Add Search Engine to Open Search

How to Customize the New Mail Sound

Instant Messaging and Chat

Installing and Using another Language in the Dictionary

Display the Thunderbird menus and toolbar

Get help with Firefox Developer Edition

Add or remove a search engine in Firefox

Thunderbird and Logjam

Customize your New Tab page to hide or display content

Enable or disable search engines on Firefox for iOS

Save passwords in Firefox for Android

Add Firefox to the Today view on your iOS device

Re-enable multi-process support disabled by Windows utilities

Change the default email program in Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

Turn search suggestions on or off on Firefox for iOS

New Tab settings in Firefox for iOS

Switch from Chrome to Firefox

Remove a search engine in Firefox Focus for Android

Autocomplete settings in the Firefox Focus address bar

File system paths on Linux are always treated as UTF-8

Security panel - Junk, scam, antivirus, and password settings in Thunderbird

Privacy panel - Remote content and cookie settings in Thunderbird

How to replace Google Assistant with a Firefox search

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

How to use collections on addons.mozilla.org

Debugging policy issues

Unable to install add-ons (extensions or themes) in Thunderbird

Choose display languages for multilingual web pages

Manage policies on macOS desktops

Disable high contrast mode in Firefox

Privacy settings in Firefox for Enterprise

Enforce policies on Firefox for Enterprise

See active policies on Firefox for Enterprise

Where can I find a list of policies for Firefox for Enterprise?

Managing policies on Linux desktops

Will policies I set work if users already installed Firefox?

Make Firefox for Enterprise the default browser

Review installed extensions

Dangerous directories

Change your two-step authentication device for your Mozilla account

Customize Firefox on macOS using configuration profiles

Using Dark Theme in Firefox for iOS

About Picture-in-Picture in Firefox

My privacy settings were changed from Custom to Standard

Turn on/off saved logins, login sync and login autofill in Firefox for Android

Tab context menu

Turn push notifications on or off in Firefox for iOS

Auto-close open tabs in Firefox for Android

Set Firefox for Android to open links in native apps

End of support for Adobe Flash

Mozilla Voice Server Proxy Retiring

View and control data collected by Mozilla VPN

Unable to uninstall add-ons (extensions or themes)

Text Encoding no longer available in the Firefox menu panel

Set Firefox as your default browser from the notification panel on Android

How to configure Close Tab warnings in Firefox

Exclude applications from Mozilla VPN protection

Set Firefox Focus as the default browser for iOS

View recently saved bookmarks from your homepage on Firefox for iOS

Change your theme in Firefox Focus for Android

Change your theme in Firefox Focus for iOS

Personalize Firefox with colorways

View articles recommended by Pocket on your Firefox for iOS homepage

Choose your opening screen for Firefox for iOS

Add a search engine to Firefox klar for Android

Remove a search engine in Firefox Klar for Android

My default search engine changed after updating Firefox

Receive only important emails sent through your masks with Firefox Relay Premium

Change site permissions in Firefox Focus for Android

Change site permissions in Firefox Klar for Android

Automatically fill in your address on web forms in Firefox for Android

How do I block phone calls or texts to my Relay Phone mask?

Mozilla VPN message center

How to disable the Firefox Relay autofill icon on online fields and websites

What should I do if I'm redirected to the Firefox Relay FAQ when clicking a link within an email?

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