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

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Add-on Badges

Firefox Page Info window

Make Firefox your default browser on Windows

Firefox options, preferences and settings

Manage local site storage settings

Customize Firefox controls, buttons and toolbars

Connection settings in Firefox

Thunderbird and Junk / Spam Messages

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

Firefox's performance settings

Import settings and data into Thunderbird for Android

Restore the Menu bar in Firefox

Automatically fill in your address on web forms

Personalized extension recommendations

Add-ons in Firefox for iOS

Tips for assessing the safety of an extension

Firefox translation for Android

Compacting folders

Legacy browser support extension for Windows

Back up and restore information in Firefox profiles

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

Global Privacy Control

How to manage your camera and microphone permissions with Firefox

Multi-Account Containers

Message threading in Thunderbird - keep messages grouped by conversation

Pop-up blocker settings, exceptions and troubleshooting

Recover lost or missing Bookmarks

Allow or block media autoplay in Firefox

How to set the home page

Filelink for Large Attachments

Turn picture-in-picture mode controls on and off

Export your Thunderbird Profile

Manage your extensions using the extensions button in the toolbar

Signatures

An extension changed my New Tab page or home page

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

Recovering important data from an old profile

Make Firefox your default browser

How do I restore my tabs from last time?

Change your default search settings in Firefox

Add the Search bar to your Firefox toolbar

How to create and use mailing lists on Thunderbird

How to set up Firefox Sync in Firefox for Android

JavaScript settings and preferences for interactive web pages

Font size and zoom - increase the size of web pages

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

Manage my default search engines in Firefox for Android

Add or remove a search engine in Firefox

Switch from Chrome to Firefox

Compact mode workaround in Firefox

Customize Date and Time formats in Thunderbird

New in Thunderbird for Android version 8

Archived Messages

How to disable the Enterprise Roots preference

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

How to opt out of studies on Firefox for Android

Control audio or video playback with your keyboard

Use Firefox in another language

Recommendations from Firefox

Auto-close open tabs in Firefox for Android

Manage optional permissions for Firefox extensions

How do I use the Firefox spell checker?

Use multiple profiles in Thunderbird

Customize your New Tab page to hide or display content

Customize the Firefox home screen

About Picture-in-Picture in Firefox

How to restore a browsing session from backup

Open Firefox automatically when you start your computer

Change the fonts and colors websites use

Search with the Firefox address bar

Usernames and passwords are not saved

Tab preferences and settings

Manage saved passwords in Firefox for iOS

Choose display languages for multilingual web pages

Import settings and data into Thunderbird

Use bookmark folders to organize your bookmarks

View PDF files using Firefox’s built-in viewer

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

Share data with Mozilla to help improve Firefox

Thunderbird add-ons - frequently asked questions

Display the Thunderbird menus and toolbar

Customize Firefox using Group Policy (Windows)

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

Change the program used to open email links

Disable or re-enable Pocket for Firefox

Dedicated profiles per Firefox installation

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

Protect your container tabs with Mozilla VPN

Secure Firefox passwords with device sign-in

Choose your preferred PDF viewer in Firefox

Cannot remove an add-on (extension or theme)

Manage file types and download actions in Firefox

Find and install extensions on Firefox for Android

Hyperlinks in Messages Not Working

Print simplified, clutter-free pages in Firefox

Access hidden tabs in Firefox

Change website appearance settings in Firefox

Add alt text to images in your PDFs using Firefox

Config Editor

Installing an Add-on in Thunderbird

Scan QR codes in Firefox for Android

Access your add-ons with a Mozilla account

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

Importing Safari data into Firefox

Set Firefox for Android to open links in native apps

Change your wallpaper in Firefox for Android

Domains to allow for Firefox

Firefox Suggest for Mobile

Block links from opening in external apps

Block and unblock websites with parental controls on Firefox

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

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

FAQ Changing IMAP to POP

How to disable or change the Thunderbird start page

Message List Columns

Configuration Options for Accounts

How to Customize the New Mail Sound

Instant Messaging and Chat

Voice input in Firefox for Android

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

Customize Firefox using AutoConfig

Firefox starts automatically when I restart Windows

Install themes to change the look of Thunderbird

Assign shortcuts to search engines

Manage extension shortcuts in Firefox

Review installed extensions

How to fix Pocket login issues

Collections in Firefox

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

Firefox for Enterprise Kiosk mode

Manage Firefox with Microsoft Endpoint Manager (Intune)

Tab context menu

Remove the Other Bookmarks folder from the Bookmarks Toolbar

How to configure Close Tab warnings in Firefox

How file downloads are handled in Firefox

Change your wallpaper in Firefox for iOS

Unified Toolbar

Thunderbird Android Telemetry

Using Dark Theme in Firefox for Android

How do I quit Firefox for Android?

Names but no Email Addresses are Displayed

How to Customize Toolbars

Enable or disable search engines on Firefox for iOS

Manage saved passwords in Firefox for Android

Customize Firefox Home on iOS

Change the default language on Firefox for iOS

Scan QR codes in Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

How is Facebook Container different from Multi-account Containers?

Customize Firefox using policies.json

Debugging policy issues

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

Manage Firefox updates

See active policies on Firefox for Enterprise

Sync logins in Firefox desktop

Dangerous directories

Playing videos in Firefox for Android

Pocket sponsored stories on new tabs

Manage notifications in Firefox for Android

Primary Password is replacing Master Password in Thunderbird

View recently saved bookmarks from your homepage on Firefox for iOS

View bookmarks on your home screen

Personalize Firefox with colorways

Upgrading from an older version of Thunderbird

New in Thunderbird 115 Supernova

Global Privacy Control in Firefox for Android

Multiwindow support on iPad for Firefox

Configure push email for Thunderbird for Android

Restore the default Smart Bookmarks Folders

How to fix preferences that won't save

Changes to toolbars and window sizes are not saved

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

Configuration Options for Identity

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

Open Search

How to Subscribe to News Feeds and Blogs

Installing and Using another Language in the Dictionary

Uninstall Firefox for Android extensions

Save passwords in Firefox for Android

Set Firefox as the default browser 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

Cliqz Recommendations in Firefox

Turn search suggestions on or off on Firefox for iOS

New Tab settings in Firefox for iOS

Privacy panel - Remote content and cookie settings in Thunderbird

How to replace Google Assistant with a Firefox search

Change themes in Firefox for iOS

Feed reader replacements for Firefox

How to use collections on addons.mozilla.org

Manage policies on macOS desktops

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

Set up Certificate Authorities (CAs) in Firefox

Configuring Networks to Disable DNS over HTTPS

Changing your two-step authentication device for your Mozilla account

Customize Firefox on macOS using configuration profiles

My privacy settings were changed from Custom to Standard

Turn push notifications on or off in Firefox for iOS

Add a Firefox widget to your Home screen

Grant camera access to Firefox for Android

Use Web Apps with Firefox for Android

End of support for Adobe Flash

Mozilla Voice Server Proxy Retiring

Unable to uninstall add-ons (extensions or themes)

How to opt out of studies on Firefox for iOS

View recent tabs on your Firefox for iOS homepage

View recent tabs on your Firefox for Android homepage

View articles recommended by Pocket on your Firefox for Android homepage

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

How to move the search bar in Firefox for iOS

New in Thunderbird 102

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

Manage your Mozilla account newsletter and email preferences

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

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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