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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

Add-on Badges

Firefox Page Info window

Firefox options, preferences and settings

Thunderbird and Junk / Spam Messages

Manage local site storage settings

Connection settings in Firefox

Web Push notifications in Firefox

Customize Firefox controls, buttons and toolbars

Firefox Translation

Customize items on your Firefox New Tab page

Automatically fill in credit card and payment method data on Web forms

Firefox's performance settings

Global Privacy Control

Personalized extension recommendations

Refresh Firefox - reset add-ons and settings

Firefox Password Manager - Alerts for breached websites

How to manage your camera and microphone permissions with Firefox

Back up and restore information in Firefox profiles

Make Firefox your default browser

Watch DRM content on Firefox

Automatically fill in your address on web forms

Firefox translation for Android

Pop-up blocker settings, exceptions and troubleshooting

Restore the Menu bar in Firefox

Import data from another browser

Filelink for Large Attachments

Import bookmarks and other data from Google Chrome

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

How to set the home page

Manage my default search engines in Firefox for Android

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

Access AI chatbots in Firefox

Allow or block media autoplay in Firefox

Tips for assessing the safety of an extension

Multi-Account Containers

Thunderbird and Gmail

Restore bookmarks from backup or move them to another computer

How to disable the Enterprise Roots preference

Recover lost or missing Bookmarks

Switch from Chrome to Firefox

Import settings and data into Thunderbird

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

JavaScript settings and preferences for interactive web pages

Manage your extensions using the extensions button in the toolbar

Compacting folders

Add-ons in Firefox for iOS

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

Add the Search bar to your Firefox toolbar

The difference between IMAP and POP3

How to set up Firefox Sync in Firefox for Android

Message threading in Thunderbird - keep messages grouped by conversation

Font size and zoom - increase the size of web pages

Turn picture-in-picture mode controls on and off

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

Recommendations from Firefox

Signatures

Open Firefox automatically when you start your computer

Legacy browser support extension for Windows

Gmail and Thunderbird for Android

Use Firefox in Full Screen mode

Import settings and data into Thunderbird for Android

Usernames and passwords are not saved

Manage optional permissions for Firefox extensions

Control whether Firefox automatically fills in forms

Manage file types and download actions in Firefox

Add or remove a search engine in Firefox

Scan QR codes in Firefox for Android

Compact mode workaround in Firefox

Customize Date and Time formats in Thunderbird

How do I restore my tabs from last time?

Import login and password data from a file

Import Bookmarks from an HTML file

Change your default search settings in Firefox

An extension changed my New Tab page or home page

About Picture-in-Picture in Firefox

Profile Manager - Create and remove Thunderbird profiles

How to opt out of studies on Firefox for Android

Secure Firefox passwords with device sign-in

Manage notifications in Firefox for Android

Customize your wallpapers

Thunderbird add-ons - frequently asked questions

How to restore a browsing session from backup

Use bookmark folders to organize your bookmarks

How to change the Thunderbird layout

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

Change the fonts and colors websites use

Cannot remove an add-on (extension or theme)

Use multiple profiles in Thunderbird

Switch from POP to IMAP account

Install the Pocket extension in your browser

Configure push email for Thunderbird for Android

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

Customize your New Tab page to hide or display content

Control audio or video playback with your keyboard

Change the program used to open email links

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

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

Choose your preferred PDF viewer in Firefox

Import Bookmarks and other data from Microsoft Edge

How do I use the Firefox spell checker?

Export bookmarks to Safari

Use Firefox in another language

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

Find and install extensions on Firefox for Android

Make Thunderbird the Default Mail Client

Sync bookmarks, tabs, history and passwords on Android

Add alt text to images in your PDFs using Firefox

Display the Thunderbird menus and toolbar

How to reset the default user agent on Firefox

Importing Safari data into Firefox

How to opt out of studies on Firefox for iOS

How to disable or change the Thunderbird start page

Protect your container tabs with Mozilla VPN

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

Tab preferences and settings

IMAP Synchronization

Customize the Firefox home screen

Scan QR codes in Firefox for iOS

Choose display languages for multilingual web pages

Dedicated profiles per Firefox installation

Change website appearance settings in Firefox

How do I change my DNS settings?

Get started with Thunderbird

Manage saved passwords in Firefox for iOS

Add a Firefox widget to your Home screen

Set Firefox for Android to open links in native apps

OpenPGP Recipient Alias Configuration

FAQ Changing IMAP to POP

Config Editor

How to Subscribe to News Feeds and Blogs

Installing an Add-on in Thunderbird

Maildir in Thunderbird

Customize Firefox using Group Policy (Windows)

Install themes to change the look of Thunderbird

Manage extension shortcuts in Firefox

Set up Certificate Authorities (CAs) in Firefox

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

Disable VPN protection for a specific website

Reset Firefox preferences to troubleshoot and fix problems

HTML5 audio and video in Firefox

How do I quit Firefox for Android?

Message List Columns

Customize Firefox using AutoConfig

Customize Firefox using policies.json

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

Change your wallpaper in Firefox for Android

Quick actions in the Firefox search bar

Hide Pocket recommendations in Firefox

Getting started with Thunderbird for Android

Get started with the Mozilla VPN extension

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

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

Hyperlinks in Messages Not Working

Disable or re-enable Pocket for Firefox

Voice input in Firefox for Android

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

Privacy panel - Remote content and cookie settings in Thunderbird

Assign shortcuts to search engines

Manage Firefox updates

Firefox for Enterprise Kiosk mode

Manage Firefox with Microsoft Endpoint Manager (Intune)

Recommended Firefox privacy and security settings for families

Upgrading from an older version of Thunderbird

A program on your computer interferes with the Mozilla VPN extension

How to fix preferences that won't save

Changes to toolbars and window sizes are not saved

Share data with Mozilla to help improve Firefox

Using Dark Theme in Firefox for Android

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

How to Customize the New Mail Sound

Enable or disable search engines on Firefox for iOS

Print simplified, clutter-free pages in Firefox

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

How is Facebook Container different from Multi-account Containers?

Enforce policies on Firefox for Enterprise

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

Collections in Firefox

Dangerous directories

Auto-close open tabs in Firefox for Android

Text Encoding no longer available in the Firefox menu panel

My default search engine changed after updating Firefox

How to move the search bar in Firefox for iOS

Install the Firefox Relay extension on Google Chrome

Domains to allow for Firefox

Firefox Suggest for Mobile

Manage the VPN extension preferences

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

Restore the default Smart Bookmarks Folders

Names but no Email Addresses are Displayed

Instant Messaging and Chat

Uninstall Firefox for Android extensions

Manage saved passwords in Firefox for Android

Customize Firefox Home on iOS

Change the default language on Firefox for iOS

Set Firefox as the default browser for iOS

Access your add-ons with a Mozilla account

Built-in themes in Firefox - alternative to complete themes

Turn search suggestions on or off on Firefox for iOS

How to add the translate add-on to Firefox

How to replace Google Assistant with a Firefox search

Facebook Container isn't working

Access hidden tabs in Firefox

Firefox starts automatically when I restart Windows

How to fix Pocket login issues

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

Playing videos in Firefox for Android

Pocket sponsored stories on new tabs

Tab context menu

Edit top sites on Firefox Lite home screen

Grant camera access to Firefox for Android

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Mozilla Voice Server Proxy Retiring

Unable to uninstall add-ons (extensions or themes)

Automatically fill in credit card information on Firefox for Android

How to configure Close Tab warnings in Firefox

Exclude applications from Mozilla VPN protection

Personalize Firefox with colorways

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

Choose your opening screen for Firefox for iOS

How file downloads are handled in Firefox

Change your wallpaper in Firefox for iOS

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

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

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

X-Mouse Button Control in Firefox 110

Why aren’t my add-ons working on some websites?

What languages is Mozilla VPN available in?

Autofill Credit Cards in Firefox for iOS

Thunderbird Matrix Chat FAQ

Block links from opening in external apps

Thunderbird Android Telemetry

New in Thunderbird for Android version 8

How will DNS work when using the VPN extension?

Manage your Monitor notifications

Block and unblock websites with parental controls on Firefox

Firefox doesn't save web form entries

Change the default language of Firefox for Android

Closing multiple Tabs - option to disable warning

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

Creating a Newsgroup Account

Configuration Options for Accounts

Configuration Options for Identity

Configuration Options for Tags

Configuration Options for Attachments

Thunderbird makes unrequested connections

Certificates

Block a sender

Installing Thunderbird on Ubuntu Linux

Add Search Engine to Open Search

Installing and Using another Language in the Dictionary

How to Customize Toolbars

Get help with Firefox Developer Edition

Thunderbird and Logjam

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

Set a homepage in Firefox for iOS

Change the default email program in Firefox for iOS

Set Firefox Lite as your default browser

New Tab settings in Firefox for iOS

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

Add shortcuts to websites on your home screen

Change themes in Firefox for iOS

Feed reader replacements for Firefox

How to use collections on addons.mozilla.org

Debugging policy issues

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

Change Firefox Lite to Night Mode

Manage policies on macOS desktops

Getting started with the Thunderbird main window

Disable high contrast mode in Firefox

Privacy settings in 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

Hide Pocket in your Firefox New Tab page

Change your two-step authentication device for your Mozilla account

Customize Firefox on macOS using configuration profiles

Using Dark Theme in Firefox for iOS

My privacy settings were changed from Custom to Standard

Change Firefox Lite themes

Firefox Lite enhanced search with Awesome bar

What's new in Firefox Lite (version 2.5)

Turn push notifications on or off in Firefox for iOS

Use Web Apps with Firefox for Android

End of support for Adobe Flash

What information does Mozilla VPN collect?

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

View recently saved bookmarks from your homepage on Firefox for iOS

View bookmarks on your home screen

View articles recommended by Pocket on your Firefox for Android homepage

Install the Firefox Relay extension on Firefox for desktop

View articles recommended by Pocket on your Firefox for iOS homepage

Add a search engine to Firefox klar for Android

Remove a search engine in Firefox Klar for Android

Autocomplete settings in the Firefox Klar address bar

Enable light or dark mode in MDN

Change site permissions in Firefox Klar for Android

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

Manage your Mozilla account newsletter and email preferences

Mozilla VPN message center

Site Permission Add-ons

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

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