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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

Change Firefox options, preferences and settings

View site information with Page Info

Customize Firefox controls, buttons and toolbars

Refresh Firefox - reset add-ons and settings

Block generative AI features with Firefox AI controls

Firefox Translations

Firefox Password Manager - Alerts for breached websites

Manage local site storage settings

Web Push notifications in Firefox

How to set up Firefox Sync in Firefox for Android

Firefox translation for Android

Recover lost or missing Bookmarks

Sponsors on the home page and New Tab page

Firefox's performance settings

Global Privacy Control

Compacting folders

Manage marketing data settings in Firefox for Android

Personalized extension recommendations

Make Firefox your default browser

Manage my default search engines in Firefox for Android

Pop-up blocker settings, exceptions and troubleshooting

Scan QR codes in Firefox for iOS

Control AI features in Firefox for Android

Access AI chatbots in Firefox

How to manage your camera and microphone permissions with Firefox

On-device AI models in Firefox

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

JavaScript settings and preferences for interactive web pages

Watch DRM content on Firefox

Restore the Menu bar in Firefox

Customize keyboard shortcuts in Firefox

Manually back up and restore Firefox profile data

Automatically fill in your address on web forms

Restore bookmarks from backup or move them to another computer

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

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

How to set the home page

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

Allow or block media autoplay in Firefox

Import settings and data into Thunderbird

Connection settings in Firefox

Import data from another browser

Control AI features in Firefox for iOS

Find and install extensions on Firefox for Android

Filelink for Large Attachments

Font size and zoom - increase the size of web pages

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

How do I use the Firefox spell checker?

Control whether Firefox automatically fills in forms

Signatures

Turn picture-in-picture mode controls on and off

Extension data collection

Open Firefox automatically when you start your computer

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

Recommendations from Firefox

Get started with the Mozilla VPN extension

Use the sidebar to access tools and vertical tabs

Use Firefox in Full Screen mode

Thunderbird add-ons - frequently asked questions

Tips for assessing the safety of an extension

Message threading in Thunderbird - keep messages grouped by conversation

How to change the Thunderbird layout

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?

Use bookmark folders to organize your bookmarks

Import Bookmarks from an HTML file

Add or remove a search engine in Firefox

Customize the Firefox home screen

Switch from Chrome to Firefox

How to disable the Enterprise Roots preference

Profile Manager - Create and remove Thunderbird profiles

Compact mode workaround in Firefox

Manage your extensions using the extensions button in the toolbar

Configure push email for Thunderbird for Android

Usernames and passwords are not saved

Customize items on your Firefox New Tab page

Add-ons in Firefox for iOS

Legacy browser support extension for Windows

Manage notifications in Firefox for Android

Add alt text to images in your PDFs using Firefox

Import settings and data into Thunderbird for Android

Gmail and Thunderbird for Android

Change the fonts and colors websites use

Cannot remove an add-on (extension or theme)

Manage file types and download actions in Firefox

OAuth2 Authentication for Yahoo, AOL and ATT

An extension changed my New Tab page or home page

Add a Firefox widget to your Home screen

How to restore a browsing session from backup

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

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

Manage Firefox search settings

Scan QR codes in Firefox for Android

Manage Firefox updates

Control audio or video playback with your keyboard

Customize Date and Time formats in Thunderbird

Use multiple profiles in Thunderbird

Configuration Options for Accounts

Switch from POP to IMAP account

How to reset the default user agent on Firefox

Customize Firefox Home on iOS

Set a homepage in Firefox for iOS

Add search engines in Firefox Focus for iOS

The difference between IMAP and POP3

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

Manage optional permissions for Firefox extensions

Change website appearance settings in Firefox

Site Permission Add-ons

Choose your preferred PDF viewer in Firefox

Thunderbird and Exchange

Reset Firefox preferences to troubleshoot and fix problems

Change the program used to open email links

FAQ Changing IMAP to POP

Thunderbird and Gmail

Message List Columns

Display the Thunderbird menus and toolbar

Add trusted websites to your allow list in Firefox Focus

Set up Certificate Authorities (CAs) in Firefox

Manage Firefox with Microsoft Endpoint Manager (Intune)

Change your wallpaper in Firefox for Android

Quick actions in the Firefox search bar

What languages is Mozilla VPN available in?

Get started with Thunderbird

Thunderbird Mobile Telemetry

Import bookmarks and other data from Google Chrome

Tab preferences and settings

Installing an Add-on in Thunderbird

Voice input in Firefox for Android

Multi-Account Containers

Add the Search bar to your Firefox toolbar

Firefox starts automatically when I restart Windows

Dedicated profiles per Firefox installation

Firefox for Enterprise Kiosk mode

About Picture-in-Picture in Firefox

HTTPS-Only Mode in Firefox Focus for Android

Change your wallpaper in Firefox for iOS

How do I change my DNS settings?

Getting started with Thunderbird for Android

Getting Started with Thunderbird Pro

Import Bookmarks and other data from Microsoft Edge

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

Audio and video files in Firefox

How do I restore my tabs from last time?

Change the default language of Firefox for Android

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

IMAP Synchronization

Thunderbird makes unrequested connections

Use Firefox in another language

Uninstall Firefox for Android extensions

Change the default language on Firefox for iOS

Set Firefox as the default browser for iOS

Manage saved passwords in Firefox for iOS

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

Customize Firefox using policies.json

Access hidden tabs in Firefox

Feed reader replacements for Firefox

Search suggestions in Firefox Focus for iOS

Getting started with the Thunderbird main window

Manage extension shortcuts in Firefox

Protect your container tabs with Mozilla VPN

Playing videos in Firefox for Android

Use Web Apps with Firefox for Android

Set Firefox for Android to open links in native apps

View bookmarks on your home screen

Install the Firefox Relay extension on Firefox for desktop

Enable light or dark mode in MDN

Recommended Firefox privacy and security settings for families

How do I change my Privacy features?

Firefox Suggest for Mobile

Disable Mozilla VPN protection for a specific website

Translate webpages in Firefox for iOS

Thunderbird for Desktop and Thundermail

Changes to toolbars and window sizes are not saved

Export bookmarks to Safari

How to disable or change the Thunderbird start page

Make Thunderbird the Default Mail Client

Configuration Options for Attachments

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

How to Customize the New Mail Sound

How to Subscribe to News Feeds and Blogs

How to Customize Toolbars

Maildir in Thunderbird

Access your add-ons with a Mozilla account

Set Firefox Focus as default browser on Android

Add a search engine to Firefox Focus for Android

Print simplified, clutter-free pages in Firefox

Facebook Container isn't working

Customize Firefox using Group Policy (Windows)

Assign shortcuts to search engines

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

Collections in Firefox

Change your two-step authentication device for your Mozilla account

Importing Safari data into Firefox

Import login and password data from a file

End of support for Adobe Flash

How to opt out of studies on Firefox for iOS

Text Encoding no longer available in the Firefox menu panel

OpenPGP Recipient Alias Configuration

How to configure Close Tab warnings in Firefox

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

My default search engine changed after updating Firefox

Manage your Mozilla account newsletter and email preferences

Change your location for a specific website

How will DNS work when using the VPN extension?

A program on your computer interferes with the Mozilla VPN extension

Orbit Frequently Asked Questions

Manage Enhanced Tracking Protection exceptions

New in Thunderbird for Android

Stop screen brightness from dimming in Thunderbird for Android

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

Restore the default Smart Bookmarks Folders

Block and unblock websites with parental controls on Firefox

How to fix preferences that won't save

Firefox doesn't save web form entries

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

Config Editor

Block a sender

Installing Thunderbird on Ubuntu Linux

Add Search Engine to Open Search

Instant Messaging and Chat

Installing and Using another Language in the Dictionary

Get help with Firefox Developer Edition

Thunderbird and Logjam

Customize your New Tab page to hide or display content

Enable or disable search engines on Firefox for iOS

Manage saved passwords in Firefox for Android

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

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

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

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 add the translate add-on to Firefox

How to replace Google Assistant with a Firefox search

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

Customize Firefox using AutoConfig

Change themes in Firefox for iOS

Firefox Focus main Menu

How to use collections on addons.mozilla.org

Install themes to change the look of Thunderbird

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

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

Dangerous directories

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

Tab context menu

Turn push notifications on or off in Firefox for iOS

Grant camera access to Firefox for Android

Auto-close open tabs in Firefox for Android

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Mozilla Voice Server Proxy Retiring

View and control data collected by Mozilla VPN

Unable to uninstall add-ons (extensions or themes)

Automatically fill in credit card information on Firefox for Android

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

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

How file downloads are handled in Firefox

How to move the address bar in Firefox for iOS

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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