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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

Thunderbird and Junk / Spam Messages

Manage local site storage settings

Sponsors on the home page and New Tab page

Pop-up blocker settings, exceptions and troubleshooting

Firefox Password Manager - Alerts for breached websites

Block generative AI features with Firefox AI controls

Refresh Firefox - reset add-ons and settings

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

Import data from another browser

Web Push notifications in Firefox

Global Privacy Control

Access AI chatbots in Firefox

How to manage your camera and microphone permissions with Firefox

Watch DRM content on Firefox

Firefox's performance settings

Allow or block media autoplay in Firefox

Make Firefox your default browser

Compacting folders

Manage marketing data settings in Firefox for Android

On-device AI models in Firefox

Filelink for Large Attachments

Automatically fill in your address on web forms

JavaScript settings and preferences for interactive web pages

Connection settings in Firefox

Personalized extension recommendations

How to set the home page

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

Control AI features in Firefox for Android

Customize Firefox controls, buttons and toolbars

Manually back up and restore Firefox profile data

Recommendations from Firefox

Quick actions in the Firefox search bar

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

Manage Firefox search settings

How do I use the Firefox spell checker?

Import settings and data into Thunderbird

Control AI features in Firefox for iOS

Switch from Chrome to Firefox

Restore bookmarks from backup or move them to another computer

Thunderbird and Gmail

Signatures

Import bookmarks and other data from Google Chrome

Find and install extensions on Firefox for Android

Extension data collection

Font size and zoom - increase the size of web pages

Add or remove a search engine in Firefox

An extension changed my New Tab page or home page

How to change the Thunderbird layout

Thunderbird add-ons - frequently asked questions

Close to tray starting in 154

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

How to disable the Enterprise Roots preference

Turn picture-in-picture mode controls on and off

Customize Date and Time formats in Thunderbird

Add alt text to images in your PDFs using Firefox

Profile Manager - Create and remove Thunderbird profiles

Import login and password data from a file

Control whether Firefox automatically fills in forms

Message threading in Thunderbird - keep messages grouped by conversation

Manage optional permissions for Firefox extensions

Choose your preferred PDF viewer in Firefox

Import Bookmarks from an HTML file

OAuth2 Authentication for Yahoo, AOL and ATT

Multi-Account Containers

Add-ons in Firefox for iOS

Manage notifications in Firefox for Android

Compact mode workaround in Firefox

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

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

Gmail and Thunderbird for Android

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

Manage Enhanced Tracking Protection exceptions

Usernames and passwords are not saved

Tab preferences and settings

FAQ Changing IMAP to POP

Add the Search bar to your Firefox toolbar

Import settings and data into Thunderbird for Android

Get started with the Mozilla VPN extension

Customize keyboard shortcuts in Firefox

Audio and video files in Firefox

How do I restore my tabs from last time?

IMAP Synchronization

Tips for assessing the safety of an extension

About Picture-in-Picture in Firefox

HTTPS-Only Mode in Firefox Focus for Android

Cannot remove an add-on (extension or theme)

Manage file types and download actions in Firefox

Dedicated profiles per Firefox installation

How to restore a browsing session from backup

Manage your extensions using the extensions button in the toolbar

Firefox translation for Android

Configure push email for Thunderbird for Android

Change the fonts and colors websites use

Change the program used to open email links

The difference between IMAP and POP3

How to set up Firefox Sync in Firefox for Android

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

Site Permission Add-ons

Get started with Thunderbird

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

Use bookmark folders to organize your bookmarks

Import Bookmarks and other data from Microsoft Edge

Switch from POP to IMAP account

Display the Thunderbird menus and toolbar

How to reset the default user agent on Firefox

Manage saved passwords in Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

Add a search engine to Firefox Focus for Android

Manage extension shortcuts in Firefox

Control audio or video playback with your keyboard

How to opt out of studies on Firefox for Android

How do I change my DNS settings?

Reset Firefox preferences to troubleshoot and fix problems

Use multiple profiles in Thunderbird

Configuration Options for Accounts

Voice input in Firefox for Android

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

Firefox starts automatically when I restart Windows

Search suggestions in Firefox Focus for iOS

Set up Certificate Authorities (CAs) in Firefox

Protect your container tabs with Mozilla VPN

Importing Safari data into Firefox

How to opt out of studies on Firefox for iOS

Change website appearance settings in Firefox

Thunderbird Mobile Telemetry

Getting started with Thunderbird for Android

Block and unblock websites with parental controls on Firefox

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

Change the default language of Firefox for Android

How to disable or change the Thunderbird start page

Config Editor

Installing an Add-on in Thunderbird

Scan QR codes in Firefox for Android

Set Firefox as the default browser for iOS

Set a homepage in Firefox for iOS

Remove a search engine in Firefox Focus for Android

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

Customize Firefox using Group Policy (Windows)

Customize Firefox using policies.json

Access hidden tabs in Firefox

Feed reader replacements for Firefox

Firefox Focus main Menu

Add trusted websites to your allow list in Firefox Focus

Assign shortcuts to search engines

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

Change your two-step authentication device for your Mozilla account

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

Set Firefox for Android to open links in native apps

Remove the Other Bookmarks folder from the Bookmarks Toolbar

How to configure Close Tab warnings in Firefox

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

Upgrading from an older version of Thunderbird

Turn off ads on MDN Plus

Unified Toolbar

Firefox Suggest for Mobile

Global Privacy Control in Firefox for Android

A program on your computer interferes with the Mozilla VPN extension

Thunderbird and Exchange

Install the Thunderbird Pro Add-on in Thunderbird Desktop

Getting Started with Thunderbird Pro

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

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

Firefox doesn't save web form entries

Using Dark Theme in Firefox for Android

Message List Columns

Thunderbird makes unrequested connections

Add Search Engine to Open Search

How to Customize Toolbars

Uninstall Firefox for Android extensions

Maildir in Thunderbird

Enable or disable search engines on Firefox for iOS

Change the default language on Firefox for iOS

Access your add-ons with a Mozilla account

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

Turn search suggestions on or off on Firefox for iOS

How is Facebook Container different from Multi-account Containers?

Customize Firefox using AutoConfig

Install themes to change the look of Thunderbird

Manage Firefox updates

Getting started with the Thunderbird main window

Enforce policies on Firefox for Enterprise

Collections in Firefox

Firefox for Enterprise Kiosk mode

Tab context menu

Use Web Apps with Firefox for Android

View and control data collected by Mozilla VPN

Automatically fill in credit card information on Firefox for Android

OpenPGP Recipient Alias Configuration

My default search engine changed after updating Firefox

Recommended Firefox privacy and security settings for families

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

X-Mouse Button Control in Firefox 110

How do I change my Privacy features?

Firefox Translations

What languages is Mozilla VPN available in?

Thunderbird Matrix Chat FAQ

How to delete an email mask

Manage your Monitor notifications

New in Thunderbird for Android

Harmful add-on protection

Change your default browser

View site information with Page Info

Restore the default Smart Bookmarks Folders

How to fix preferences that won't save

Firefox settings, preferences and other options

Changes to toolbars and window sizes are not saved

Recover lost or missing Bookmarks

Export bookmarks to Safari

Restore the Menu bar in Firefox

Use Firefox in Full Screen mode

Share data with Mozilla to help improve Firefox

Customize items on your Firefox New Tab page

How do I change to the desktop view in 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

Names but no Email Addresses are Displayed

Make Thunderbird the Default Mail Client

Configuration Options for Identity

Configuration Options for Tags

Configuration Options for Attachments

Certificates

Block a sender

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

Installing Thunderbird on Ubuntu Linux

How to Customize the New Mail Sound

How to Subscribe to News Feeds and Blogs

Instant Messaging and Chat

Installing and Using another Language in the Dictionary

Use Firefox in another language

Get help with Firefox Developer Edition

Manage my default search engines in Firefox for Android

Thunderbird and Logjam

Customize your New Tab page to hide or display content

Manage saved passwords in Firefox for Android

Customize Firefox Home on iOS

Customize the Firefox home screen

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

Set Firefox Focus as default browser on Android

New Tab settings in Firefox for iOS

Autocomplete settings in the Firefox Focus address bar

Add search engines in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

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

Privacy panel - Remote content and cookie settings in Thunderbird

How to add the translate add-on to Firefox

How to replace Google Assistant with a Firefox search

Facebook Container isn't working

Block cookies in Firefox Focus for Android

Change themes in Firefox for iOS

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

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

Legacy browser support extension for Windows

Review installed extensions

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

Dangerous directories

Playing videos in Firefox for Android

Customize Firefox on macOS using configuration profiles

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

Using Dark Theme in Firefox for iOS

My privacy settings were changed from Custom to Standard

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

Turn push notifications on or off in Firefox for iOS

Add a Firefox widget to your Home screen

Grant camera access to Firefox for Android

Auto-close open tabs in Firefox for Android

End of support for Adobe Flash

Mozilla Voice Server Proxy Retiring

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

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

View bookmarks on your home screen

Change your theme in Firefox Focus for Android

Change your theme in Firefox Focus for iOS

Personalize Firefox with colorways

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

Install the Firefox Relay extension on Firefox for desktop

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

Autocomplete settings in the Firefox Klar address bar

How file downloads are handled in Firefox

How to move the address bar in Firefox for iOS

Change your wallpaper in Firefox for iOS

Change your wallpaper in Firefox for Android

Enable light or dark mode in MDN

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

Manage your Mozilla account newsletter and email preferences

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

Mozilla VPN message center

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

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