Settings

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

In English

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

Customize Firefox controls, buttons and toolbars

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

Connection settings in Firefox

Web Push notifications in Firefox

Firefox Translation

Firefox's performance settings

Personalized extension recommendations

Watch DRM content on Firefox

How to manage your camera and microphone permissions with Firefox

Refresh Firefox - reset add-ons and settings

Firefox Password Manager - Alerts for breached websites

Automatically fill in your address on web forms

Import bookmarks and other data from Google Chrome

Back up and restore information in Firefox profiles

Restore the Menu bar in Firefox

Pop-up blocker settings, exceptions and troubleshooting

Make Firefox your default browser

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

Import data from another browser

Global Privacy Control

Change your default search settings in Firefox

Filelink for Large Attachments

Tips for assessing the safety of an extension

Multi-Account Containers

Switch from Chrome to Firefox

Turn picture-in-picture mode controls on and off

How to set the home page

Use Firefox in another language

Compacting folders

Manage my default search engines in Firefox for Android

Add-ons in Firefox for iOS

Restore bookmarks from backup or move them to another computer

Recover lost or missing Bookmarks

Message threading in Thunderbird - keep messages grouped by conversation

Allow or block media autoplay in Firefox

JavaScript settings and preferences for interactive web pages

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

How to set up Firefox Sync in Firefox for Android

Recommendations from Firefox

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

The difference between IMAP and POP3

Open Firefox automatically when you start your computer

Legacy browser support extension for Windows

Manage your extensions using the extensions button in the toolbar

Firefox translation for Android

Signatures

Compact mode workaround in Firefox

Thunderbird and Gmail

Control whether Firefox automatically fills in forms

Sync bookmarks, tabs, history and passwords on Android

Use Firefox in Full Screen mode

Font size and zoom - increase the size of web pages

Add the Search bar to your Firefox toolbar

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

Add or remove a search engine in Firefox

An extension changed my New Tab page or home page

Control audio or video playback with your keyboard

Import settings and data into Thunderbird

Import settings and data into Thunderbird for Android

Usernames and passwords are not saved

How to disable the Enterprise Roots preference

Customize items on your Firefox New Tab page

Customize Date and Time formats in Thunderbird

How do I restore my tabs from last time?

Cannot remove an add-on (extension or theme)

How do I use the Firefox spell checker?

Use multiple profiles in Thunderbird

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

Use bookmark folders to organize your bookmarks

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

Disable or re-enable Pocket for Firefox

Manage optional permissions for Firefox extensions

Customize your wallpapers

Installing an Add-on in Thunderbird

How to restore a browsing session from backup

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

Import Bookmarks from an HTML file

How to change the Thunderbird layout

Manage file types and download actions in Firefox

Display the Thunderbird menus and toolbar

Manage notifications in Firefox for Android

Get started with the Mozilla VPN extension

Configuration Options for Accounts

Scan QR codes in Firefox for iOS

Choose display languages for multilingual web pages

Import login and password data from a file

Change website appearance settings in Firefox

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

How do I change my DNS settings?

Get started with Thunderbird

Getting started with Thunderbird for Android

Import Bookmarks and other data from Microsoft Edge

Change the program used to open email links

Configure push email for Thunderbird for Android

Change the fonts and colors websites use

Switch from POP to IMAP account

Manage saved passwords in Firefox for iOS

Manage extension shortcuts in Firefox

Add alt text to images in your PDFs using Firefox

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

IMAP Synchronization

Set Firefox Focus as default browser on Android

Manage Firefox updates

Export bookmarks to Safari

Thunderbird add-ons - frequently asked questions

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

Customize Firefox using policies.json

Dedicated profiles per Firefox installation

Protect your container tabs with Mozilla VPN

Firefox for Enterprise Kiosk mode

About Picture-in-Picture in Firefox

Importing Safari data into Firefox

Set Firefox for Android to open links in native apps

HTTPS-Only Mode in Firefox Focus for Android

Access AI chatbots in Firefox

Thunderbird Android Telemetry

Gmail and Thunderbird for Android

Use the sidebar to access tools and vertical tabs

HTML5 audio and video in Firefox

FAQ Changing IMAP to POP

Message List Columns

How to reset the default user agent on Firefox

Scan QR codes in Firefox for Android

Collections in Firefox

Profile Manager - Create and remove Thunderbird profiles

Auto-close open tabs in Firefox for Android

How to opt out of studies on Firefox for iOS

Install the Pocket extension in your browser

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

Reset Firefox preferences to troubleshoot and fix problems

Tab preferences and settings

How to Subscribe to News Feeds and Blogs

Customize Firefox Home on iOS

Customize the Firefox home screen

Access your add-ons with a Mozilla account

Built-in themes in Firefox - alternative to complete themes

Set up Certificate Authorities (CAs) in Firefox

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

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

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

Block and unblock websites with parental controls on Firefox

Firefox doesn't save web form entries

Find and install extensions on Firefox for Android

How to disable or change the Thunderbird start page

Hyperlinks in Messages Not Working

Make Thunderbird the Default Mail Client

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

Customize Firefox using AutoConfig

Customize Firefox using Group Policy (Windows)

Firefox starts automatically when I restart Windows

Install themes to change the look of Thunderbird

Hide Pocket in your Firefox New Tab page

Change your two-step authentication device for your Mozilla account

Playing videos in Firefox for Android

OpenPGP Recipient Alias Configuration

How to move the search bar in Firefox for iOS

Upgrading from an older version of Thunderbird

Hide Pocket recommendations in Firefox

Firefox Suggest for Mobile

Choose your preferred PDF viewer in Firefox

New in Thunderbird for Android version 8

Change your location for a specific website

A program on your computer interferes with the Mozilla VPN extension

Creating a Newsgroup Account

How to Customize the New Mail Sound

How to Customize Toolbars

Maildir in Thunderbird

Voice input in Firefox for Android

Autocomplete settings in the Firefox Focus address bar

Add search engines in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

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

Privacy panel - Remote content and cookie settings in Thunderbird

Access hidden tabs in Firefox

Feed reader replacements for Firefox

Search suggestions in Firefox Focus for iOS

Add trusted websites to your allow list in Firefox Focus

Assign shortcuts to search engines

Manage policies on macOS desktops

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

Remove the Other Bookmarks folder from the Bookmarks Toolbar

What information does Mozilla VPN collect?

How to opt out of studies on Firefox Focus for Android

How file downloads are handled in Firefox

My default search engine changed after updating Firefox

Install the Firefox Relay extension on Google Chrome

Quick actions in the Firefox search bar

Domains to allow for Firefox

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

How to delete an email mask

Address autofill on Firefox

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

Changes to toolbars and window sizes are not saved

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

Change the default language of Firefox for Android

Using Dark Theme in Firefox for Android

How do I quit Firefox for Android?

Config Editor

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

Customize your New Tab page to hide or display content

Manage saved passwords in Firefox for Android

Set a homepage in Firefox for iOS

Add a search engine to Firefox Focus for Android

How to replace Google Assistant with a Firefox search

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

Firefox Focus main Menu

How to use collections on addons.mozilla.org

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

Getting started with the Thunderbird main window

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?

Enable auto-fill on your Android devices

Pocket sponsored stories on new tabs

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

End of support for Adobe Flash

Text Encoding no longer available in the Firefox menu panel

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

Change your wallpaper in Firefox for Android

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

Recommended Firefox privacy and security settings for families

X-Mouse Button Control in Firefox 110

Install the Firefox Relay extension in Firefox for Android

Unified Toolbar

Autofill Credit Cards in Firefox for iOS

Enabling the Pocket Share extension in iOS

Thunderbird Matrix Chat FAQ

Block links from opening in external apps

Disable VPN protection for a specific website

How will DNS work when using the VPN extension?

Restore the default Smart Bookmarks Folders

How to fix preferences that won't save

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

Names but no Email Addresses are Displayed

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

Instant Messaging and Chat

Installing and Using another Language in the Dictionary

Get help with Firefox Developer Edition

Uninstall Firefox for Android extensions

Thunderbird and Logjam

Enable or disable search engines on Firefox for iOS

Save passwords in Firefox for Android

Change the default language on Firefox for iOS

Set Firefox as the default browser for iOS

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 Lite as your default browser

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

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

How to add the translate add-on to Firefox

Add shortcuts to websites on your home screen

Change themes in Firefox for iOS

Debugging policy issues

Change Firefox Lite to Night Mode

Disable high contrast mode in Firefox

Privacy settings in 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

How to fix Pocket login issues

Enable auto-fill on your iPhone or iPad

Set Firefox as your default browser on Lockwise for iOS

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

Dangerous directories

Customize Firefox on macOS using configuration profiles

Using Dark Theme in Firefox for iOS

My privacy settings were changed from Custom to Standard

Manage Firefox with Microsoft Endpoint Manager (Intune)

Tab context menu

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

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

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

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

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

How to opt out of studies on Firefox Focus 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

Change your wallpaper in Firefox for iOS

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

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?

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

In English