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

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Block generative AI features with Firefox AI controls

Access AI chatbots in Firefox

About Add-on Badges

View site information with Page Info

Change Firefox options, preferences and settings

On-device AI models in Firefox

Thunderbird and Junk / Spam Messages

Sponsors on the home page and New Tab page

Customize Firefox controls, buttons and toolbars

Connection settings in Firefox

Pop-up blocker settings, exceptions and troubleshooting

Web Push notifications in Firefox

Refresh Firefox - reset add-ons and settings

Watch DRM content on Firefox

Firefox's performance settings

How to manage your camera and microphone permissions with Firefox

Make Firefox your default browser on Windows

Scan QR codes in Firefox for iOS

Compacting folders

Recover lost or missing Bookmarks

Personalized extension recommendations

Import data from another browser

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

Allow or block media autoplay in Firefox

Open Firefox automatically when you start your computer

Filelink for Large Attachments

Manage marketing data settings in Firefox for Android

Back up and restore information in Firefox profiles

Use the sidebar to access tools and vertical tabs

Manage my default search engines in Firefox for Android

Add alt text to images in your PDFs using Firefox

How to set up Firefox Sync in Firefox for Android

Firefox translation for Android

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

Import bookmarks and other data from Google Chrome

Import settings and data into Thunderbird

Restore bookmarks from backup or move them to another computer

Restore the Menu bar in Firefox

Turn picture-in-picture mode controls on and off

Quick actions in the Firefox search bar

Multi-Account Containers

OAuth2 Authentication for Yahoo, AOL and ATT

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

Thunderbird and Gmail

Recommendations from Firefox

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

JavaScript settings and preferences for interactive web pages

The difference between IMAP and POP3

Control whether Firefox automatically fills in forms

Font size and zoom - increase the size of web pages

Find and install extensions on Firefox for Android

An extension changed my New Tab page or home page

Manage Firefox updates

Signatures

Add or remove a search engine in Firefox

How to disable the Enterprise Roots preference

Manage your extensions using the extensions button in the toolbar

Manage notifications in Firefox for Android

Customize Date and Time formats in Thunderbird

Import Bookmarks from an HTML file

Manage Firefox search settings

Profile Manager - Create and remove Thunderbird profiles

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

Usernames and passwords are not saved

Use Firefox in Full Screen mode

Add the Search bar to your Firefox toolbar

Tips for assessing the safety of an extension

Import settings and data into Thunderbird for Android

How do I restore my tabs from last time?

Thunderbird add-ons - frequently asked questions

Message threading in Thunderbird - keep messages grouped by conversation

How to change the Thunderbird layout

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

Customize items on your Firefox New Tab page

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

About Picture-in-Picture in Firefox

Control audio or video playback with your keyboard

Manage extension shortcuts in Firefox

Import login and password data from a file

Thunderbird and Exchange

Switch from Chrome to Firefox

Manage optional permissions for Firefox extensions

Extension data collection

Manage file types and download actions in Firefox

Compact mode workaround in Firefox

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

Configure push email for Thunderbird for Android

Gmail and Thunderbird for Android

Cannot remove an add-on (extension or theme)

Audio and video files in Firefox

How to Subscribe to News Feeds and Blogs

Add-ons in Firefox for iOS

Legacy browser support extension for Windows

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

Customize Firefox using Group Policy (Windows)

Change website appearance settings in Firefox

Get started with the Mozilla VPN extension

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

Reset Firefox preferences to troubleshoot and fix problems

Change the program used to open email links

Use multiple profiles in Thunderbird

Customize the Firefox home screen

Customize Firefox using AutoConfig

Firefox Password Manager - Alerts for breached websites

How to opt out of studies on Firefox for Android

Choose your preferred PDF viewer in Firefox

Configuration Options for Accounts

Display the Thunderbird menus and toolbar

Installing an Add-on in Thunderbird

Customize Firefox Home on iOS

Manage local site storage settings

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

HTTPS-Only Mode in Firefox Focus for Android

Site Permission Add-ons

Firefox Translations

Make Firefox your default browser

How do I use the Firefox spell checker?

Switch from POP to IMAP account

Instant Messaging and Chat

Maildir in Thunderbird

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

Firefox starts automatically when I restart Windows

Install themes to change the look of Thunderbird

Search suggestions in Firefox Focus for iOS

How to restore a browsing session from backup

Change your wallpaper in Firefox for Android

Getting started with Thunderbird for Android

A program on your computer interferes with the Mozilla VPN extension

Change the fonts and colors websites use

Use bookmark folders to organize your bookmarks

Import Bookmarks and other data from Microsoft Edge

Tab preferences and settings

IMAP Synchronization

Scan QR codes in Firefox for Android

Manage saved passwords in Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

Automatically fill in your address on web forms

Dedicated profiles per Firefox installation

Change your two-step authentication device for your Mozilla account

Importing Safari data into Firefox

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

How do I change my DNS settings?

How to automatically label your new email masks

Global Privacy Control

Change your location for a specific website

Thunderbird for Desktop and Thundermail

Block and unblock websites with parental controls on Firefox

How to fix preferences that won't save

How to set the home page

Export bookmarks to Safari

Thunderbird makes unrequested connections

Config Editor

How to Customize Toolbars

How to reset the default user agent on Firefox

Manage saved passwords in Firefox for Android

Set Firefox as the default browser for iOS

Set a homepage in Firefox for iOS

Autocomplete settings in the Firefox Focus address bar

Add search engines in Firefox Focus for iOS

Customize Firefox using policies.json

Access hidden tabs in Firefox

Assign shortcuts to search engines

Set up Certificate Authorities (CAs) in Firefox

Protect your container tabs with Mozilla VPN

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

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Unable to uninstall add-ons (extensions or themes)

How to opt out of studies on Firefox for iOS

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

Install the Firefox Relay extension on Firefox for desktop

How file downloads are handled in Firefox

Recommended Firefox privacy and security settings for families

Thunderbird Mobile Telemetry

Disable Mozilla VPN protection for a specific website

Customize your Firefox app icon on iOS

Customize keyboard shortcuts in Firefox

Changes to toolbars and window sizes are not saved

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

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

Using Dark Theme in Firefox for Android

FAQ Changing IMAP to POP

Creating a Newsgroup Account

How to disable or change the Thunderbird start page

Message List Columns

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

How to Customize the New Mail Sound

Use Firefox in another language

Get help with Firefox Developer Edition

Uninstall Firefox for Android extensions

Voice input in Firefox for Android

Access your add-ons with a Mozilla account

Add a search engine to Firefox Focus for Android

Feed reader replacements for Firefox

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

Add trusted websites to your allow list in Firefox Focus

See active policies on Firefox for Enterprise

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

Firefox for Enterprise Kiosk mode

Using Dark Theme 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

Set Firefox for Android to open links in native apps

End of support for Adobe Flash

Text Encoding no longer available in the Firefox menu panel

OpenPGP Recipient Alias Configuration

View bookmarks on your home screen

Personalize Firefox with colorways

My default search engine changed after updating Firefox

How to move the address bar in Firefox for iOS

Change your wallpaper in Firefox for iOS

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

Domains to allow for Firefox

Upgrading from an older version of Thunderbird

Autofill Credit Cards in Firefox for iOS

Thunderbird Matrix Chat FAQ

How to delete an email mask

Global Privacy Control in Firefox for Android

Address autofill on Firefox

Manage your Monitor notifications

Orbit Frequently Asked Questions

Install the Thunderbird Pro Add-on in Thunderbird Desktop

Getting Started with Thunderbird Pro

Restore the default Smart Bookmarks Folders

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

How do I quit Firefox for Android?

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

Installing Thunderbird on Ubuntu Linux

Add Search Engine to Open Search

Installing and Using another Language in the Dictionary

Thunderbird and Logjam

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

Change the default language on Firefox 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

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

Set Firefox Focus as default browser on Android

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

Print simplified, clutter-free pages in Firefox

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

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

Change themes in Firefox for iOS

Firefox Focus main Menu

How to use collections on addons.mozilla.org

Debugging policy issues

Choose display languages for multilingual web pages

Manage policies on macOS desktops

Getting started with the Thunderbird main window

Disable high contrast mode in Firefox

Privacy settings in Firefox for Enterprise

Enforce 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

Collections in Firefox

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

My privacy settings were changed from Custom to Standard

Tab context menu

Turn push notifications on or off in Firefox for iOS

Use Web Apps with Firefox for Android

Mozilla Voice Server Proxy Retiring

View and control data collected by Mozilla VPN

Automatically fill in credit card information on Firefox for Android

Set Firefox as your default browser from the notification panel on 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

Change your theme in Firefox Focus for Android

Change your theme in Firefox Focus for iOS

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

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

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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