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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

Connection settings in Firefox

Customize Firefox controls, buttons and toolbars

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

Global Privacy Control

Firefox's performance settings

Personalized extension recommendations

Back up and restore information in Firefox profiles

Refresh Firefox - reset add-ons and settings

Make Firefox your default browser

Automatically fill in your address on web forms

How to manage your camera and microphone permissions with Firefox

Firefox translation for Android

Restore the Menu bar in Firefox

Pop-up blocker settings, exceptions and troubleshooting

Export your Thunderbird Profile

Filelink for Large Attachments

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

Manage my default search engines in Firefox for Android

JavaScript settings and preferences for interactive web pages

Tips for assessing the safety of an extension

How to set the home page

Allow or block media autoplay in Firefox

Multi-Account Containers

Message threading in Thunderbird - keep messages grouped by conversation

Recover lost or missing Bookmarks

How to disable the Enterprise Roots preference

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

Compacting folders

Import settings and data into Thunderbird

Font size and zoom - increase the size of web pages

Manage your extensions using the extensions button in the toolbar

Add the Search bar to your Firefox toolbar

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

Turn picture-in-picture mode controls on and off

Add-ons in Firefox for iOS

How to set up Firefox Sync in Firefox for Android

Switch from Chrome to Firefox

Open Firefox automatically when you start your computer

View PDF files using Firefox’s built-in viewer

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

How to create and use mailing lists on Thunderbird

Legacy browser support extension for Windows

Gmail and Thunderbird for Android

Signatures

How do I restore my tabs from last time?

Scan QR codes in Firefox for Android

Manage optional permissions for Firefox extensions

Manage file types and download actions in Firefox

Usernames and passwords are not saved

Add or remove a search engine in Firefox

How to restore a browsing session from backup

Import settings and data into Thunderbird for Android

Manage notifications in Firefox for Android

Search with the Firefox address bar

Recommendations from Firefox

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

An extension changed my New Tab page or home page

Compact mode workaround in Firefox

Use bookmark folders to organize your bookmarks

About Picture-in-Picture in Firefox

Profile Manager - Create and remove Thunderbird profiles

Control audio or video playback with your keyboard

Install the Pocket extension in your browser

Customize your wallpapers

Change the fonts and colors websites use

Cannot remove an add-on (extension or theme)

Accessibility features in Firefox - Make Firefox and web content work for all users

Secure Firefox passwords with device sign-in

Switch from POP to IMAP account

Customize your New Tab page to hide or display content

Use multiple profiles in Thunderbird

Choose your preferred PDF viewer in Firefox

Archived Messages

Thunderbird add-ons - frequently asked questions

Configuration Options for Accounts

How to reset the default user agent on Firefox

Change the program used to open email links

How to disable or change the Thunderbird start page

Use Firefox in another language

Importing Safari data into Firefox

Add alt text to images in your PDFs using Firefox

Configure push email for Thunderbird for Android

How do I use the Firefox spell checker?

Find and install extensions on Firefox for Android

Display the Thunderbird menus and toolbar

Manage saved passwords in Firefox for iOS

Scan QR codes in Firefox for iOS

Dedicated profiles per Firefox installation

Manage extension shortcuts in Firefox

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

Config Editor

Install themes to change the look of Thunderbird

Protect your container tabs with Mozilla VPN

Change website appearance settings in Firefox

Tab preferences and settings

Customize Firefox using Group Policy (Windows)

Choose display languages for multilingual web pages

Add a Firefox widget to your Home screen

Set Firefox for Android to open links in native apps

How to opt out of studies on Firefox for iOS

Reset Firefox preferences to troubleshoot and fix problems

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

HTML5 audio and video in Firefox

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

How do I quit Firefox for Android?

FAQ Changing IMAP to POP

How to Subscribe to News Feeds and Blogs

Installing an Add-on in Thunderbird

Customize the Firefox home screen

Voice input in Firefox for Android

Customize Firefox using AutoConfig

Customize Firefox using policies.json

Set up Certificate Authorities (CAs) in Firefox

How to configure Close Tab warnings in Firefox

Change your wallpaper in Firefox for Android

Quick actions in the Firefox search bar

Upgrading from an older version of Thunderbird

Disable VPN protection for a specific website

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

Manage Firefox updates

Dangerous directories

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

My default search engine changed after updating Firefox

A program on your computer interferes with the Mozilla VPN extension

How to fix preferences that won't save

Changes to toolbars and window sizes are not saved

Using Dark Theme in Firefox for Android

Hyperlinks in Messages Not Working

Message List Columns

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

How to Customize the New Mail Sound

Change your default search settings in Firefox

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

How is Facebook Container different from Multi-account Containers?

Firefox starts automatically when I restart Windows

Assign shortcuts to search engines

Enforce policies on Firefox for Enterprise

Collections in Firefox

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

Firefox for Enterprise Kiosk mode

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

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

Choose your opening screen for Firefox for iOS

How file downloads are handled in Firefox

New in Thunderbird 115 Supernova

Thunderbird Matrix Chat FAQ

Hide Pocket recommendations in Firefox

Block links from opening in external apps

Thunderbird Android Telemetry

Get started with the Mozilla VPN extension

Restore the default Smart Bookmarks Folders

Block and unblock websites with parental controls on Firefox

Share data with Mozilla to help improve Firefox

Names but no Email Addresses are Displayed

Configuration Options for Attachments

Instant Messaging and Chat

Uninstall Firefox for Android extensions

Disable or re-enable Pocket for Firefox

Enable or disable search engines on Firefox for iOS

Manage saved passwords in Firefox for Android

Change the default language on Firefox for iOS

Set Firefox as the default browser for iOS

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

Built-in themes in Firefox - alternative to complete themes

How to add the translate add-on to Firefox

Facebook Container isn't working

Access hidden tabs in Firefox

Where can I find a list of policies for Firefox for Enterprise?

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

Review installed extensions

How to fix Pocket login issues

Playing videos in Firefox for Android

Tab context menu

Auto-close open tabs in Firefox for Android

Mozilla Voice Server Proxy Retiring

Unable to uninstall add-ons (extensions or themes)

View recent tabs on your Firefox for iOS homepage

View recent tabs on your Firefox for Android homepage

Personalize Firefox with colorways

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

How to move the search 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

X-Mouse Button Control in Firefox 110

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

Autofill Credit Cards in Firefox for iOS

Firefox Suggest for Mobile

New in Thunderbird for Android version 8

Getting started with Thunderbird for Android

How will DNS work when using the VPN extension?

Manage the VPN extension preferences

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

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

Control whether Firefox automatically fills in forms

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

Thunderbird and Gmail

Creating a Newsgroup Account

Make Thunderbird the Default Mail Client

Configuration Options for Identity

Configuration Options for Tags

Thunderbird makes unrequested connections

Certificates

Block a sender

Installing Thunderbird on Ubuntu Linux

Installing and Using another Language in the Dictionary

How to Customize Toolbars

Get help with Firefox Developer Edition

Watch DRM content on Firefox

Maildir in Thunderbird

Thunderbird and Logjam

Customize Firefox Home on iOS

Save passwords in Firefox for Android

Access your add-ons with a Mozilla account

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

Turn search suggestions on or off on Firefox for iOS

New Tab settings in Firefox for iOS

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

How to replace Google Assistant with a Firefox search

The difference between IMAP and POP3

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

Manage policies on macOS desktops

Getting started with the Thunderbird main window

How to change the Thunderbird layout

Disable high contrast mode in Firefox

Privacy settings in Firefox for Enterprise

See active policies on 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

Hide Pocket in your Firefox New Tab page

Change your two-step authentication device for your Mozilla account

Customize Firefox on macOS using configuration profiles

Pocket sponsored stories on new tabs

My privacy settings were changed from Custom to Standard

Turn push notifications on or off in Firefox for iOS

End of support for Adobe Flash

Remove the Other Bookmarks folder from the Bookmarks Toolbar

Text Encoding no longer available in the Firefox menu panel

Automatically fill in credit card information on Firefox for Android

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

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

View articles recommended by Pocket on your Firefox for iOS homepage

Automatically fill in your address on web forms in Firefox for Android

Manage your Mozilla account newsletter and email preferences

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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