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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

Firefox settings, preferences and other options

View site information with Page Info

Thunderbird and Junk / Spam Messages

Access AI chatbots in Firefox

Manage local site storage settings

Use the sidebar to access tools and vertical tabs

Firefox Password Manager - Alerts for breached websites

Customize Firefox controls, buttons and toolbars

Firefox translations

Manage marketing data settings in Firefox for Android

Refresh Firefox - reset add-ons and settings

Watch DRM content on Firefox

Sponsors on the home page and New Tab page

Make Firefox your default browser

Compacting folders

Import data from another browser

Global Privacy Control

Pop-up blocker settings, exceptions and troubleshooting

Block generative AI features with Firefox AI controls

Control AI features in Firefox for Android

How to manage your camera and microphone permissions with Firefox

Firefox translation for Android

JavaScript settings and preferences for interactive web pages

Connection settings in Firefox

How to set up Firefox Sync in Firefox for Android

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

Personalized extension recommendations

Manage my default search engines in Firefox for Android

Recover lost or missing Bookmarks

Allow or block media autoplay in Firefox

Automatically fill in your address on web forms

Quick actions in the Firefox search bar

Firefox's performance settings

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

Restore bookmarks from backup or move them to another computer

Filelink for Large Attachments

Manage Enhanced Tracking Protection exceptions

Customize keyboard shortcuts in Firefox

Manually back up and restore Firefox profile data

Restore the Menu bar in Firefox

Customize items on your Firefox New Tab page

Find and install extensions on Firefox for Android

Control AI features in Firefox for iOS

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

How to set the home page

Signatures

How do I use the Firefox spell checker?

Switch from Chrome to Firefox

Import settings and data into Thunderbird

Multi-Account Containers

Import bookmarks and other data from Google Chrome

Web Push notifications in Firefox

Extension data collection

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

Get started with the Mozilla VPN extension

Font size and zoom - increase the size of web pages

Manage Firefox search settings

Choose your preferred PDF viewer in Firefox

Reset Firefox preferences to troubleshoot and fix problems

Thunderbird and Gmail

Control whether Firefox automatically fills in forms

Enable Compact mode in Firefox

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

Gmail and Thunderbird for Android

Usernames and passwords are not saved

How do I restore my tabs from last time?

An extension changed my New Tab page or home page

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

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

Thunderbird and Microsoft email (Office365, Hotmail, outlook.com, etc)

Import login and password data from a file

How to opt out of studies on Firefox for Android

Configure push email for Thunderbird for Android

On-device AI models in Firefox

Manage file types and download actions in Firefox

Use Firefox in Full Screen mode

Thunderbird add-ons - frequently asked questions

Add-ons in Firefox for iOS

Turn picture-in-picture mode controls on and off

Profile Manager - Create and remove Thunderbird profiles

Set Firefox for Android to open links in native apps

Manage optional permissions for Firefox extensions

Open Firefox automatically when you start your computer

Cannot remove an add-on (extension or theme)

Use Firefox in another language

Message threading in Thunderbird - keep messages grouped by conversation

Add the Search bar to your Firefox toolbar

Tips for assessing the safety of an extension

How to change the Thunderbird layout

Customize Date and Time formats in Thunderbird

Add alt text to images in your PDFs using Firefox

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

Use multiple profiles in Thunderbird

How to disable the Enterprise Roots preference

Import settings and data into Thunderbird for Android

Import Bookmarks from an HTML file

Switch from POP to IMAP account

Add a search engine to Firefox Focus for Android

HTTPS-Only Mode in Firefox Focus for Android

Site Permission Add-ons

Manage your extensions using the extensions button in the toolbar

Firefox Suggest for Mobile

Get started with Thunderbird

Tab preferences and settings

IMAP Synchronization

Configuration Options for Accounts

Customize the Firefox home screen

Dedicated profiles per Firefox installation

Control audio or video playback with your keyboard

How to restore a browsing session from backup

Change the fonts and colors websites use

Use bookmark folders to organize your bookmarks

Audio and video files in Firefox

Display the Thunderbird menus and toolbar

Customize Firefox Home on iOS

Scan QR codes in Firefox for Android

Firefox starts automatically when I restart Windows

Manage Firefox with Microsoft Endpoint Manager (Intune)

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

Thunderbird and Microsoft protocols (Exchange and Graph)

Change your default browser

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

Using Dark Theme in Firefox for Android

FAQ Changing IMAP to POP

Installing an Add-on in Thunderbird

Manage saved passwords in Firefox for iOS

Set Firefox Focus as default browser on Android

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

Privacy panel - Remote content and cookie settings in Thunderbird

Customize Firefox using Group Policy (Windows)

Protect your container tabs with Mozilla VPN

Importing Safari data into Firefox

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

Add a Firefox widget to your Home screen

OpenPGP Recipient Alias Configuration

How to configure Close Tab warnings in Firefox

Choose your opening screen for Firefox for iOS

My default search engine changed after updating Firefox

Recommended Firefox privacy and security settings for families

How do I change my DNS settings?

Disable Mozilla VPN protection for a specific website

Change your location for a specific website

Thunderbird for Desktop and Thundermail

Getting Started with Thunderbird Pro

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

Import Bookmarks and other data from Microsoft Edge

Change the program used to open email links

OAuth2 Authentication for Yahoo, AOL and ATT

Thunderbird makes unrequested connections

Config Editor

How to Subscribe to News Feeds and Blogs

How to reset the default user agent on Firefox

Maildir in Thunderbird

Manage saved passwords in Firefox for Android

Voice input in Firefox for Android

Set Firefox as the default browser for iOS

Access your add-ons with a Mozilla account

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

The difference between IMAP and POP3

Search suggestions in Firefox Focus for iOS

Choose display languages for multilingual web pages

Manage extension shortcuts in Firefox

Set up Certificate Authorities (CAs) in Firefox

About Picture-in-Picture in Firefox

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

Exclude applications from Mozilla VPN protection

Change website appearance settings in Firefox

Manage your Mozilla account newsletter and email preferences

Upgrading from an older version of Thunderbird

What languages is Mozilla VPN available in?

Customize your Firefox app icon on iOS

How to fix preferences that won't save

Export bookmarks to Safari

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

How to disable or change the Thunderbird start page

Make Thunderbird the Default Mail Client

Message List Columns

Configuration Options for Identity

How to Customize the New Mail Sound

How to Customize Toolbars

Get help with Firefox Developer Edition

Uninstall Firefox for Android extensions

Enable or disable search engines on Firefox for iOS

Change the default language on Firefox for iOS

Add search engines in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

Customize Firefox using AutoConfig

Change themes in Firefox for iOS

Feed reader replacements for Firefox

Install themes to change the look of Thunderbird

Add trusted websites to your allow list in Firefox Focus

Manage Firefox updates

Getting started with the Thunderbird main window

Collections in Firefox

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

Change your two-step authentication device for your Mozilla account

Playing videos in Firefox for Android

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

Manage notifications in Firefox for Android

Use Web Apps with Firefox for Android

End of support for Adobe Flash

View and control data collected by Mozilla VPN

How to opt out of studies on Firefox for iOS

Text Encoding no longer available in the Firefox menu panel

Automatically fill in credit card information on Firefox for Android

View recently saved bookmarks from your homepage on Firefox for iOS

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

Change your wallpaper in Firefox for iOS

Enable light or dark mode in MDN

Thunderbird Matrix Chat FAQ

Thunderbird Mobile Telemetry

Getting started with Thunderbird for Android

A program on your computer interferes with the Mozilla VPN extension

Manage your Monitor notifications

Use Lockdown mode in Firefox Enterprise

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

Restore the default Smart Bookmarks Folders

Block and unblock websites with parental controls on Firefox

Changes to toolbars and window sizes are not saved

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

Creating a Newsgroup Account

Names but no Email Addresses are Displayed

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

Instant Messaging and Chat

Installing and Using another Language in the Dictionary

Add or remove a search engine in Firefox

Thunderbird and Logjam

Customize your New Tab page to hide or display content

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

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

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

Customize Firefox using policies.json

Access hidden tabs in Firefox

Recommendations from Firefox

Firefox Focus main Menu

How to use collections on addons.mozilla.org

Debugging policy issues

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

Assign shortcuts to search engines

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

Legacy browser support extension for Windows

Review installed extensions

Dangerous directories

Customize Firefox on macOS using configuration profiles

Firefox for Enterprise Kiosk mode

Using Dark Theme in Firefox for iOS

My privacy settings were changed from Custom to Standard

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

Unable to uninstall add-ons (extensions or themes)

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

Set Firefox Focus as the default browser for iOS

View bookmarks on your home screen

Change your theme in Firefox Focus for Android

Personalize Firefox with colorways

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

How to move the address bar in Firefox for iOS

Change your wallpaper in Firefox for Android

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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