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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

Access AI chatbots in Firefox

Connection settings in Firefox

Web Push notifications in Firefox

Firefox Translation

How to manage your camera and microphone permissions with Firefox

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

Refresh Firefox - reset add-ons and settings

Make Firefox your default browser

Firefox's performance settings

Firefox Password Manager - Alerts for breached websites

Watch DRM content on Firefox

Scan QR codes in Firefox for Android

Filelink for Large Attachments

Firefox translation for Android

Restore the Menu bar in Firefox

Global Privacy Control

Recover lost or missing Bookmarks

Scan QR codes in Firefox for iOS

Back up and restore information in Firefox profiles

Pop-up blocker settings, exceptions and troubleshooting

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

Multi-Account Containers

Customize items on your Firefox New Tab page

Compacting folders

Manage my default search engines in Firefox for Android

How to set the home page

Change your default search settings in Firefox

Automatically fill in your address on web forms

Turn picture-in-picture mode controls on and off

Customize your wallpapers

Thunderbird and Gmail

Manage marketing data settings in Firefox for Android

Recommendations from Firefox

Import settings and data into Thunderbird

Tips for assessing the safety of an extension

Restore bookmarks from backup or move them to another computer

Allow or block media autoplay in Firefox

How to set up Firefox Sync in Firefox for Android

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

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

How to change the Thunderbird layout

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

JavaScript settings and preferences for interactive web pages

Use Firefox in another language

Sync bookmarks, tabs, history and passwords on Android

Message threading in Thunderbird - keep messages grouped by conversation

Usernames and passwords are not saved

Font size and zoom - increase the size of web pages

Add-ons in Firefox for iOS

Switch from Chrome to Firefox

Quick actions in the Firefox search bar

Add the Search bar to your Firefox toolbar

Sponsors on the home and new tab page

Import Bookmarks from an HTML file

How to disable the Enterprise Roots preference

Get started with the Mozilla VPN extension

Control whether Firefox automatically fills in forms

Signatures

Use the sidebar to access tools and vertical tabs

Use Firefox in Full Screen mode

Compact mode workaround in Firefox

Import settings and data into Thunderbird for Android

Thunderbird add-ons - frequently asked questions

The difference between IMAP and POP3

Add alt text to images in your PDFs using Firefox

Manage notifications in Firefox for Android

Grant camera access to Firefox for Android

Gmail and Thunderbird for Android

Change the fonts and colors websites use

About Picture-in-Picture in Firefox

Cannot remove an add-on (extension or theme)

Import Bookmarks and other data from Microsoft Edge

How do I use the Firefox spell checker?

Import login and password data from a file

How to opt out of studies on Firefox for Android

Customize Date and Time formats in Thunderbird

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

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

Legacy browser support extension for Windows

Open Firefox automatically when you start your computer

Import data from another browser

Manage file types and download actions in Firefox

Control audio or video playback with your keyboard

How to restore a browsing session from backup

Change website appearance settings in Firefox

How do I restore my tabs from last time?

Use multiple profiles in Thunderbird

Display the Thunderbird menus and toolbar

Personalized extension recommendations

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

Import bookmarks and other data from Google Chrome

Switch from POP to IMAP account

Installing an Add-on in Thunderbird

Set Firefox Focus as default browser on Android

Customize Firefox using policies.json

Choose display languages for multilingual web pages

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

Manage your extensions using the extensions button in the toolbar

Use bookmark folders to organize your bookmarks

Search suggestions in Firefox Focus for iOS

How do I change my DNS settings?

Get started with Thunderbird

Reset Firefox preferences to troubleshoot and fix problems

Make Thunderbird the Default Mail Client

Autocomplete settings in the Firefox Focus address bar

Customize Firefox using AutoConfig

Customize Firefox using Group Policy (Windows)

Firefox for Enterprise Kiosk mode

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

Choose your preferred PDF viewer in Firefox

Configure push email for Thunderbird for Android

Tab preferences and settings

Find and install extensions on Firefox for Android

FAQ Changing IMAP to POP

Configuration Options for Accounts

Config Editor

Customize Firefox Home on iOS

Install themes to change the look of Thunderbird

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

Importing Safari data into Firefox

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

Manage optional permissions for Firefox extensions

What information does Mozilla VPN collect?

Block and unblock websites with parental controls on Firefox

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

Export bookmarks to Safari

Audio and video files in Firefox

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

How to Subscribe to News Feeds and Blogs

How to reset the default user agent on Firefox

Manage saved passwords in Firefox for iOS

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

Set up Certificate Authorities (CAs) in Firefox

Protect your container tabs with Mozilla VPN

Manage Firefox with Microsoft Endpoint Manager (Intune)

Add a Firefox widget to your Home screen

Set Firefox for Android to open links in native apps

How to configure Close Tab warnings in Firefox

Recommended Firefox privacy and security settings for families

Thunderbird Mobile Telemetry

New in Thunderbird for Android version 8

A program on your computer interferes with the Mozilla VPN extension

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

Change the default language of Firefox for Android

IMAP Synchronization

Message List Columns

How to Customize the New Mail Sound

Get help with Firefox Developer Edition

Add or remove a search engine in Firefox

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

Privacy panel - Remote content and cookie settings in Thunderbird

Add trusted websites to your allow list in Firefox Focus

Assign shortcuts to search engines

Dedicated profiles per Firefox installation

Enforce policies on Firefox for Enterprise

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

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

Profile Manager - Create and remove Thunderbird profiles

Automatically fill in credit card information on Firefox for Android

HTTPS-Only Mode in Firefox Focus for Android

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

Site Permission Add-ons

Upgrading from an older version of Thunderbird

Firefox Suggest for Mobile

Getting started with Thunderbird for Android

Notifications in Thunderbird

Disable VPN protection for a specific website

Changes to toolbars and window sizes are not saved

Change the program used to open email links

Firefox doesn't save web form entries

Using Dark Theme in Firefox for Android

How do I quit Firefox for Android?

How to disable or change the Thunderbird start page

Configuration Options for Attachments

Thunderbird makes unrequested connections

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

How to Customize Toolbars

Disable or re-enable Pocket for Firefox

Enable or disable search engines on Firefox for iOS

Change the default language on Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

An extension changed my New Tab page or home page

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

Access hidden tabs in Firefox

Change themes in Firefox for iOS

Firefox starts automatically when I restart Windows

Firefox Focus main Menu

Change Firefox Lite to Night Mode

Manage Firefox updates

Getting started with the Thunderbird main window

Disable high contrast mode in Firefox

Collections in Firefox

Change your two-step authentication device for your Mozilla account

Playing videos in Firefox for Android

Use Web Apps with Firefox for Android

End of support for Adobe Flash

Unable to uninstall add-ons (extensions or themes)

How to opt out of studies on Firefox for iOS

Text Encoding no longer available in the Firefox menu panel

OpenPGP Recipient Alias Configuration

Exclude applications from Mozilla VPN protection

Personalize Firefox with colorways

Choose your opening screen for Firefox for iOS

How to move the address bar in Firefox for iOS

Change your wallpaper in Firefox for Android

Domains to allow for Firefox

How to automatically label your new email masks

userChrome.css and .js and userContent are unsupported

Enabling the Pocket Share extension in iOS

Thunderbird Matrix Chat FAQ

Install the Pocket extension in your browser

How to delete an email mask

Global Privacy Control in Firefox for Android

Block links from opening in external apps

Change your location for a specific website

How will DNS work when using the VPN extension?

Manage your Monitor notifications

On-device AI models in Firefox

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

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

Creating a Newsgroup Account

Names but no Email Addresses are Displayed

Configuration Options for Identity

Configuration Options for Tags

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

Uninstall Firefox for Android extensions

Maildir in Thunderbird

Thunderbird and Logjam

Customize the Firefox home screen

Save passwords in Firefox for Android

Voice input in Firefox for Android

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

Set a homepage in Firefox for iOS

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

Add a search engine to Firefox Focus for Android

Add search engines in Firefox Focus for iOS

Print simplified, clutter-free pages in Firefox

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

Add shortcuts to websites on your home screen

Facebook Container isn't working

How is Facebook Container different from Multi-account Containers?

Block cookies in Firefox Focus for Android

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

Manage policies on macOS desktops

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

Manage extension shortcuts in Firefox

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

Hide Pocket in your Firefox New Tab page

Enable auto-fill on your iPhone or iPad

Set Firefox as your default browser on Lockwise for iOS

Enable auto-fill on your Android devices

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

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

Auto-close open tabs in Firefox for Android

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Mozilla Voice Server Proxy Retiring

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

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

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

My default search engine changed after updating Firefox

Change your wallpaper in Firefox for iOS

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

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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