Settings

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

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Make Firefox your default browser on Windows

Firefox options, preferences and settings

Firefox Page Info window

Thunderbird and Junk / Spam Messages

Add-on Badges

Manage local site storage settings

Connection settings in Firefox

Customize Firefox controls, buttons and toolbars

Customize items on your Firefox New Tab page

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

Firefox Translation

Web Push notifications in Firefox

Global Privacy Control

Firefox's performance settings

Refresh Firefox - reset add-ons and settings

Firefox Password Manager - Alerts for breached websites

Personalized extension recommendations

Watch DRM content on Firefox

Make Firefox your default browser

Import bookmarks and other data from Google Chrome

Pop-up blocker settings, exceptions and troubleshooting

Back up and restore information in Firefox profiles

Import data from another browser

Filelink for Large Attachments

Firefox translation for Android

Restore the Menu bar in Firefox

Manage my default search engines in Firefox for Android

Switch from Chrome to Firefox

How to set the home page

Thunderbird and Gmail

Change your default search settings in Firefox

Multi-Account Containers

Tips for assessing the safety of an extension

Restore bookmarks from backup or move them to another computer

Recover lost or missing Bookmarks

Add-ons in Firefox for iOS

Allow or block media autoplay in Firefox

Turn picture-in-picture mode controls on and off

Access AI chatbots in Firefox

Compacting folders

How to manage your camera and microphone permissions with Firefox

How to set up Firefox Sync in Firefox for Android

The difference between IMAP and POP3

Import settings and data into Thunderbird

Recommendations from Firefox

Manage your extensions using the extensions button in the toolbar

JavaScript settings and preferences for interactive web pages

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

Add the Search bar to your Firefox toolbar

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

Signatures

Font size and zoom - increase the size of web pages

Legacy browser support extension for Windows

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

Message threading in Thunderbird - keep messages grouped by conversation

Compact mode workaround in Firefox

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

Import settings and data into Thunderbird for Android

Open Firefox automatically when you start your computer

Use Firefox in Full Screen mode

Control whether Firefox automatically fills in forms

An extension changed my New Tab page or home page

Usernames and passwords are not saved

How do I restore my tabs from last time?

Automatically fill in your address on web forms

Manage file types and download actions in Firefox

Sync bookmarks, tabs, history and passwords on Android

How to disable the Enterprise Roots preference

About Picture-in-Picture in Firefox

Manage optional permissions for Firefox extensions

Gmail and Thunderbird for Android

Add or remove a search engine in Firefox

Import login and password data from a file

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

Customize your wallpapers

Use bookmark folders to organize your bookmarks

Profile Manager - Create and remove Thunderbird profiles

Customize Date and Time formats in Thunderbird

Thunderbird add-ons - frequently asked questions

Scan QR codes in Firefox for Android

Install the Pocket extension in your browser

Cannot remove an add-on (extension or theme)

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

How to change the Thunderbird layout

Use multiple profiles in Thunderbird

Use Firefox in another language

Control audio or video playback with your keyboard

How to opt out of studies on Firefox for Android

Change the fonts and colors websites use

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

Import Bookmarks and other data from Microsoft Edge

How do I use the Firefox spell checker?

Importing Safari data into Firefox

How to restore a browsing session from backup

Choose your preferred PDF viewer in Firefox

Import Bookmarks from an HTML file

Change the program used to open email links

Share data with Mozilla to help improve Firefox

Switch from POP to IMAP account

Customize your New Tab page to hide or display content

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

Manage notifications in Firefox for Android

How to opt out of studies on Firefox for iOS

How to opt out of studies on Firefox Focus for Android

Export bookmarks to Safari

Change website appearance settings in Firefox

How do I change my DNS settings?

IMAP Synchronization

How to reset the default user agent on Firefox

Disable or re-enable Pocket for Firefox

Installing an Add-on in Thunderbird

Scan QR codes in Firefox for iOS

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

Find and install extensions on Firefox for Android

Config Editor

Customize the Firefox home screen

Set Firefox Focus as default browser on Android

Customize Firefox using policies.json

Search suggestions in Firefox Focus for iOS

Set Firefox for Android to open links in native apps

Add alt text to images in your PDFs using Firefox

Getting started with Thunderbird for Android

Reset Firefox preferences to troubleshoot and fix problems

FAQ Changing IMAP to POP

How to Subscribe to News Feeds and Blogs

Display the Thunderbird menus and toolbar

Choose display languages for multilingual web pages

Manage extension shortcuts in Firefox

Protect your container tabs with Mozilla VPN

Change your two-step authentication device for your Mozilla account

HTTPS-Only Mode in Firefox Focus for Android

Disable VPN protection for a specific website

Tab preferences and settings

Message List Columns

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

Customize Firefox using AutoConfig

Customize Firefox using Group Policy (Windows)

Manage Firefox updates

Dedicated profiles per Firefox installation

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

Add a Firefox widget to your Home screen

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

Recommended Firefox privacy and security settings for families

Get started with the Mozilla VPN extension

A program on your computer interferes with the Mozilla VPN extension

How do I quit Firefox for Android?

Configuration Options for Accounts

Manage saved passwords in Firefox for iOS

Autocomplete settings in the Firefox Focus address bar

Add search engines in Firefox Focus for iOS

Install themes to change the look of Thunderbird

Assign shortcuts to search engines

Pocket sponsored stories on new tabs

Auto-close open tabs in Firefox for Android

Safari Integration in Firefox iOS

Quick actions in the Firefox search bar

Domains to allow for Firefox

Hide Pocket recommendations in Firefox

Get started with Thunderbird

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

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

HTML5 audio and video in Firefox

How to disable or change the Thunderbird start page

Hyperlinks in Messages Not Working

Enable or disable search engines on Firefox for iOS

Manage saved passwords in Firefox for Android

Set up Certificate Authorities (CAs) in Firefox

Playing videos in Firefox for Android

Firefox for Enterprise Kiosk mode

OpenPGP Recipient Alias Configuration

How file downloads are handled in Firefox

Block links from opening in external apps

Thunderbird Android Telemetry

Manage the VPN extension preferences

Use the sidebar to access tools and vertical tabs

Changes to toolbars and window sizes are not saved

Maildir in Thunderbird

Customize Firefox Home on iOS

Add a search engine to Firefox Focus for Android

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

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

Privacy panel - Remote content and cookie settings in Thunderbird

Firefox starts automatically when I restart Windows

Add trusted websites to your allow list in Firefox Focus

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

Dangerous directories

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

Text Encoding no longer available in the Firefox menu panel

How to opt out of studies on Firefox Focus for iOS

My default search engine changed after updating Firefox

How to move the search bar in Firefox for iOS

Change your wallpaper in Firefox for Android

Firefox Suggest for Mobile

Configure push email for Thunderbird for Android

How will DNS work when using the VPN extension?

Manage your Monitor notifications

Block and unblock websites with parental controls on Firefox

How to fix preferences that won't save

Thunderbird makes unrequested connections

How to Customize the New Mail Sound

Instant Messaging and Chat

Change the default language on Firefox for iOS

Set Firefox as the default browser for iOS

Access your add-ons with a Mozilla account

Set a homepage in Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

Set Firefox Lite as your default browser

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 Focus main Menu

Getting started with the Thunderbird main window

Enforce policies on Firefox for Enterprise

How to fix Pocket login issues

Hide Pocket in your Firefox New Tab page

Enable auto-fill on your iPhone or iPad

Tab context menu

Edit top sites on Firefox Lite home screen

Remove the Other Bookmarks folder from the Bookmarks Toolbar

What information does Mozilla VPN collect?

Automatically fill in credit card information on Firefox for Android

Exclude applications from Mozilla VPN protection

Change your theme in Firefox Focus for iOS

Personalize Firefox with colorways

Change your wallpaper in Firefox for iOS

Install the Firefox Relay extension on Google Chrome

Manage your Mozilla account newsletter and email preferences

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

Upgrading from an older version of Thunderbird

Unified Toolbar

Autofill Credit Cards in Firefox for iOS

userChrome.css and .js and userContent are unsupported

Notifications in Thunderbird

Restore the default Smart Bookmarks Folders

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

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

Using Dark Theme in Firefox for Android

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

Add Search Engine to Open Search

Installing and Using another Language in the Dictionary

How to Customize Toolbars

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

Get help with Firefox Developer Edition

Uninstall Firefox for Android extensions

Thunderbird and Logjam

Save passwords in Firefox for Android

Voice input 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

New Tab settings in Firefox for iOS

Remove a search engine in Firefox Focus for Android

Print simplified, clutter-free pages in Firefox

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

Add shortcuts to websites on your home screen

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

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

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

Set Firefox as your default browser on Lockwise for iOS

Enable auto-fill on your Android devices

Collections in Firefox

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

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

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

End of support for Adobe Flash

Mozilla Voice Server Proxy Retiring

Unable to uninstall add-ons (extensions or themes)

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

How to configure Close Tab warnings in Firefox

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

View articles recommended by Pocket on your Firefox for Android homepage

Change your theme in Firefox Focus for Android

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

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

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

Mozilla VPN message center

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

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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