Settings

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

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Add-on Badges

Make Firefox your default browser on Windows

Thunderbird and Junk / Spam Messages

Manage local site storage settings

Firefox Page Info window

Firefox's performance settings

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

Firefox translation for Android

Global Privacy Control

Personalized extension recommendations

Restore the Menu bar in Firefox

Connection settings in Firefox

Customize Firefox controls, buttons and toolbars

Multi-Account Containers

Firefox options, preferences and settings

Back up and restore information in Firefox profiles

Add-ons in Firefox for iOS

Pop-up blocker settings, exceptions and troubleshooting

Legacy browser support extension for Windows

Import settings and data into Thunderbird

Allow or block media autoplay in Firefox

Open Firefox automatically when you start your computer

Compacting folders

How to manage your camera and microphone permissions with Firefox

Recommendations from Firefox

Switching from Chrome to Firefox

How to set the home page

Filelink for Large Attachments

Make Firefox your default browser

Message threading in Thunderbird - keep messages grouped by conversation

Manage your extensions using the extensions button in the toolbar

Recover lost or missing Bookmarks

Manage my default search engines in Firefox for Android

Change your default search settings in Firefox

Turn picture-in-picture mode controls on and off

Export your Thunderbird Profile

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

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

Compact mode workaround in Firefox

Font size and zoom - increase the size of web pages

Automatically fill in your address on web forms

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

How to create and use mailing lists on Thunderbird

JavaScript settings and preferences for interactive web pages

How do I restore my tabs from last time?

Signatures

Add or remove a search engine in Firefox

Tips for assessing the safety of an extension

How to disable the Enterprise Roots preference

Import settings and data into Thunderbird for Android

Recovering important data from an old profile

Customize your New Tab page to hide or display content

Manage saved passwords in Firefox for iOS

Auto-close open tabs in Firefox for Android

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

An extension changed my New Tab page or home page

Customize Date and Time formats in Thunderbird

Search with the Firefox address bar

Add the Search bar to your Firefox toolbar

Secure Firefox passwords with device sign-in

Control audio or video playback with your keyboard

How to opt out of studies on Firefox for Android

How do I use the Firefox spell checker?

Archived Messages

How to set up Firefox Sync in Firefox for Android

Tab preferences and settings

Using Multiple Profiles

Manage notifications in Firefox for Android

Thunderbird Android Telemetry

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

Use Firefox in another language

Choose your preferred PDF viewer in Firefox

Usernames and passwords are not saved

View PDF files using Firefox’s built-in viewer

Find and install extensions on Firefox for Android

Thunderbird add-ons - frequently asked questions

Installing an Add-on in Thunderbird

Use bookmark folders to organize your bookmarks

Change the program used to open email links

Disable or re-enable Pocket for Firefox

Collections in Firefox

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

Scan QR codes in Firefox for Android

Dedicated profiles per Firefox installation

About Picture-in-Picture in Firefox

Add a Firefox widget to your Home screen

New in Thunderbird for Android version 8

Manage file types and download actions in Firefox

Configuration Options for Accounts

Display the Thunderbird menus and toolbar

Customize the Firefox home screen

Voice input in Firefox for Android

Customizing Firefox Using Group Policy (Windows)

What if I'm locked out of Two-Step Authentication?

Protect your container tabs with Mozilla VPN

Managing Firefox with Microsoft Endpoint Manager (Intune)

Set Firefox for Android to open links in native apps

Change the fonts and colors websites use

Share data with Mozilla to help improve Firefox

Using Dark Theme in Firefox for Android

Message List Columns

How to Customize the New Mail Sound

Customize Firefox Home on iOS

Access your add-ons with a Mozilla account

Customizing Firefox Using AutoConfig

Access hidden tabs in Firefox

Assign shortcuts to search engines

Choose display languages for multilingual web pages

How to fix Pocket login issues

Firefox Enterprise Kiosk mode

Importing Safari data into Firefox

How to restore a browsing session from backup

Upgrading from an older version of Thunderbird

Firefox Suggest for Mobile

Cannot remove an add-on (extension or theme)

How do I quit Firefox for Android?

FAQ Changing IMAP to POP

Hyperlinks in Messages Not Working

Config Editor

How to Subscribe to News Feeds and Blogs

Instant Messaging and Chat

Change your Mozilla account password

Customizing Firefox Using policies.json

Sync logins in Firefox desktop

Playing videos in Firefox for Android

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

Tab context menu

Remove the Other Bookmarks folder from the Bookmarks Toolbar

How file downloads are handled in Firefox

Block links from opening in external apps

Block and unblock websites with parental controls on Firefox

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

Enable or disable search engines on Firefox for iOS

Set Firefox as the default browser for iOS

Built-in themes in Firefox - alternative to complete themes

Turn search suggestions on or off on Firefox for iOS

Print simplified, clutter-free pages in Firefox

Firefox starts automatically when I restart Windows

Install themes to change the look of Thunderbird

Disable high contrast mode in Firefox

See active policies on Firefox for Enterprise

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

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

Dangerous directories

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

Manage optional permissions for Firefox extensions

Primary Password is replacing Master Password in Thunderbird

View bookmarks on your home screen

Personalize Firefox with colorways

View articles recommended by Pocket on your Firefox for iOS homepage

Change your wallpaper in Firefox for iOS

Change website appearance settings in Firefox

Manage your Mozilla account newsletter and email preferences

Site Permission Add-ons

Domains to Allow for Firefox

New in Thunderbird 115 Supernova

Unified Toolbar

Add alt text to images in your PDFs using Firefox

Restore the default Smart Bookmarks Folders

How to fix preferences that won't save

Changes to toolbars and window sizes are not saved

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

Firefox doesn't save web form entries

HTML5 audio and video in Firefox

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

Creating a Newsgroup Account

How to disable or change the Thunderbird start page

Names but no Email Addresses are Displayed

Configuration Options for Identity

Configuration Options for Tags

Configuration Options for Attachments

Certificates

Block a sender

Installing Thunderbird on Ubuntu Linux

Open Search

Installing and Using another Language in the Dictionary

How to Customize Toolbars

Uninstall Firefox for Android extensions

Manage saved passwords in Firefox for Android

Save passwords in Firefox for Android

Change the default language on Firefox for iOS

Add Firefox to the Today view on your iOS device

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

Scan QR codes in Firefox for iOS

Cliqz Recommendations in Firefox

New Tab settings in Firefox for iOS

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

Privacy panel - Remote content and cookie settings in Thunderbird

How to replace Google Assistant with a Firefox search

How is Facebook Container different from Multi-account Containers?

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

Managing Firefox Updates

Managing policies on macOS desktops

Privacy settings in Firefox for Enterprise

Enforcing policies on Firefox for Enterprise

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

Managing policies on Linux desktops

Setting Up Certificate Authorities (CAs) in Firefox

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

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