Settings

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

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About Add-on Badges

View site information with Page Info

Manage local site storage settings

Make Firefox your default browser on Windows

Access AI chatbots in Firefox

Thunderbird and Junk / Spam Messages

Use the sidebar to access tools and vertical tabs

Customize items on your Firefox New Tab page

Connection settings in Firefox

Web Push notifications in Firefox

Scan QR codes in Firefox for iOS

Global Privacy Control

Customize Firefox controls, buttons and toolbars

How to manage your camera and microphone permissions with Firefox

Make Firefox your default browser

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

Firefox's performance settings

Firefox Password Manager - Alerts for breached websites

Watch DRM content on Firefox

Change Firefox options, preferences and settings

Back up and restore information in Firefox profiles

Recover lost or missing Bookmarks

Personalized extension recommendations

Manage marketing data settings in Firefox for Android

Automatically fill in your address on web forms

Firefox translation for Android

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

Compacting folders

How to set up Firefox Sync in Firefox for Android

Restore bookmarks from backup or move them to another computer

Restore the Menu bar in Firefox

Sponsors on the home page and New Tab page

How to set the home page

Refresh Firefox - reset add-ons and settings

Filelink for Large Attachments

Import settings and data into Thunderbird

Recommendations from Firefox

JavaScript settings and preferences for interactive web pages

Turn picture-in-picture mode controls on and off

Open Firefox automatically when you start your computer

Import bookmarks and other data from Google Chrome

Thunderbird and Gmail

Manage my default search engines in Firefox for Android

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

Firefox Translation

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

Sync bookmarks, tabs, history and passwords on Android

How to disable the Enterprise Roots preference

Use Firefox in another language

Legacy browser support extension for Windows

Usernames and passwords are not saved

Signatures

Allow or block media autoplay in Firefox

Control audio or video playback with your keyboard

Manage your extensions using the extensions button in the toolbar

Control whether Firefox automatically fills in forms

Find and install extensions on Firefox for Android

Import data from another browser

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

How do I restore my tabs from last time?

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

Multi-Account Containers

Get started with the Mozilla VPN extension

Font size and zoom - increase the size of web pages

Manage Firefox search settings

Add-ons in Firefox for iOS

An extension changed my New Tab page or home page

The difference between IMAP and POP3

Tips for assessing the safety of an extension

How to change the Thunderbird layout

Customize Date and Time formats in Thunderbird

On-device AI models in Firefox

Extension data collection

Use Firefox in Full Screen mode

Customize Firefox Home on iOS

Message threading in Thunderbird - keep messages grouped by conversation

Manage file types and download actions in Firefox

Use bookmark folders to organize your bookmarks

Add the Search bar to your Firefox toolbar

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

Import settings and data into Thunderbird for Android

How do I use the Firefox spell checker?

Switch from Chrome to Firefox

Compact mode workaround in Firefox

Get started with Thunderbird

Gmail and Thunderbird for Android

Change the fonts and colors websites use

Configuration Options for Accounts

Display the Thunderbird menus and toolbar

Import login and password data from a file

How to opt out of studies on Firefox for Android

Import Bookmarks from an HTML file

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

Choose display languages for multilingual web pages

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

Change the program used to open email links

Thunderbird add-ons - frequently asked questions

How to restore a browsing session from backup

How do I change my DNS settings?

Thunderbird and Exchange

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

Profile Manager - Create and remove Thunderbird profiles

Manage notifications in Firefox for Android

Change website appearance settings in Firefox

Getting started with Thunderbird for Android

Reset Firefox preferences to troubleshoot and fix problems

IMAP Synchronization

Use multiple profiles in Thunderbird

Set Firefox Focus as default browser on Android

Install themes to change the look of Thunderbird

Manage optional permissions for Firefox extensions

Add alt text to images in your PDFs using Firefox

Configure push email for Thunderbird for Android

Import Bookmarks and other data from Microsoft Edge

Add or remove a search engine in Firefox

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

Recommended Firefox privacy and security settings for families

Firefox Suggest for Mobile

Export bookmarks to Safari

FAQ Changing IMAP to POP

Switch from POP to IMAP account

Customize the Firefox home screen

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

Dedicated profiles per Firefox installation

Set up Certificate Authorities (CAs) in Firefox

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

Grant camera access to Firefox for Android

How to opt out of studies on Firefox for iOS

Quick actions in the Firefox search bar

Cannot remove an add-on (extension or theme)

Audio and video files in Firefox

Tab preferences and settings

Make Thunderbird the Default Mail Client

How to Subscribe to News Feeds and Blogs

How to reset the default user agent on Firefox

Installing an Add-on in Thunderbird

Manage saved passwords in Firefox for Android

Access your add-ons with a Mozilla account

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

Built-in themes in Firefox - alternative to complete themes

Add search engines in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

Access hidden tabs in Firefox

Add trusted websites to your allow list in Firefox Focus

Manage Firefox updates

Protect your container tabs with Mozilla VPN

Playing videos in Firefox for Android

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

HTTPS-Only Mode in Firefox Focus for Android

Thunderbird Mobile Telemetry

Disable Mozilla VPN protection for a specific website

Changes to toolbars and window sizes are not saved

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

How to disable or change the Thunderbird start page

Get help with Firefox Developer Edition

Maildir in Thunderbird

Scan QR codes in Firefox for Android

Manage saved passwords in Firefox for iOS

Add a search engine to Firefox Focus for Android

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

Search suggestions in Firefox Focus for iOS

Assign shortcuts to search engines

Manage extension shortcuts in Firefox

Collections in Firefox

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

Importing Safari data into Firefox

Manage Firefox with Microsoft Endpoint Manager (Intune)

Tab context menu

Set Firefox for Android to open links in native apps

How to configure Close Tab warnings in Firefox

Enable light or dark mode in MDN

Site Permission Add-ons

Unified Toolbar

Block links from opening in external apps

A program on your computer interferes with the Mozilla VPN extension

Manage the Mozilla VPN extension preferences

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

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

Creating a Newsgroup Account

Message List Columns

Thunderbird makes unrequested connections

Config Editor

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

How to Customize the New Mail Sound

How to Customize Toolbars

Uninstall Firefox for Android extensions

Thunderbird and Logjam

Voice input in Firefox for Android

Change the default language on Firefox for iOS

Set Firefox as the default browser for iOS

Set Firefox Lite as your default browser

Remove a search engine in Firefox Focus for Android

Autocomplete settings in the Firefox Focus address bar

How is Facebook Container different from Multi-account Containers?

Customize Firefox using AutoConfig

Customize Firefox using policies.json

Feed reader replacements for Firefox

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

Getting started with the Thunderbird main window

Disable high contrast mode in Firefox

Make Firefox for Enterprise the default browser

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

Firefox for Enterprise Kiosk mode

Use Web Apps with Firefox for Android

Automatically fill in credit card information on Firefox for Android

Exclude applications from Mozilla VPN protection

Choose your opening screen for Firefox for iOS

My default search engine changed after updating Firefox

How to move the address bar in Firefox for iOS

Change your wallpaper in Firefox for Android

Domains to allow for Firefox

Turn off ads on MDN Plus

How to automatically label your new email masks

userChrome.css and .js and userContent are unsupported

Thunderbird Matrix Chat FAQ

Global Privacy Control in Firefox for Android

Enable or disable Local Network Access on iOS

Choose your preferred PDF viewer in Firefox

New in Thunderbird for Android version 8

Orbit Frequently Asked Questions

New in Thunderbird for Android

Restore the default Smart Bookmarks Folders

Block and unblock websites with parental controls on Firefox

How to fix preferences that won't save

Pop-up blocker settings, exceptions and troubleshooting

Firefox doesn't save web form entries

Change the default language of Firefox for Android

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?

Names but no Email Addresses are Displayed

Configuration Options for Identity

Configuration Options for Tags

Configuration Options for Attachments

Certificates

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

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

Set a homepage in Firefox for iOS

Change the default email program in Firefox for iOS

Turn search suggestions on or off on Firefox for iOS

New Tab settings in Firefox for iOS

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

Add shortcuts to websites on your home screen

Facebook Container isn't working

Block cookies in Firefox Focus for Android

Customize Firefox using Group Policy (Windows)

Change themes in Firefox for iOS

Firefox starts automatically when I restart Windows

Firefox Focus main Menu

How to use collections on addons.mozilla.org

Debugging policy issues

Change Firefox Lite to Night Mode

Manage policies on macOS desktops

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?

Review installed extensions

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

About Picture-in-Picture in Firefox

My privacy settings were changed from Custom to Standard

Change Firefox Lite themes

Edit top sites on Firefox Lite home screen

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

Add a Firefox widget to your Home screen

Auto-close open tabs in Firefox for Android

End of support for Adobe Flash

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)

Text Encoding no longer available in the Firefox menu panel

OpenPGP Recipient Alias Configuration

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

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

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

Change your wallpaper 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

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

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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