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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

Firefox Page Info window

Thunderbird and Junk / Spam Messages

Manage local site storage settings

Customize Firefox controls, buttons and toolbars

Firefox options, preferences and settings

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

Back up and restore information in Firefox profiles

Firefox's performance settings

Pop-up blocker settings, exceptions and troubleshooting

Automatically fill in your address on web forms

Firefox translation for Android

Personalized extension recommendations

Multi-Account Containers

Manage my default search engines in Firefox for Android

Global Privacy Control

Add-ons in Firefox for iOS

Restore the Menu bar in Firefox

Tips for assessing the safety of an extension

Change your default search settings in Firefox

Export your Thunderbird Profile

Add the Search bar to your Firefox toolbar

How to manage your camera and microphone permissions with Firefox

Notifications in Thunderbird

How to set the home page

Message threading in Thunderbird - keep messages grouped by conversation

Switch from Chrome to Firefox

Connection settings in Firefox

Allow or block media autoplay in Firefox

Recover lost or missing Bookmarks

Compact mode workaround in Firefox

Turn picture-in-picture mode controls on and off

Open Firefox automatically when you start your computer

Import settings and data into Thunderbird for Android

JavaScript settings and preferences for interactive web pages

Manage optional permissions for Firefox extensions

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

Import settings and data into Thunderbird

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

Compacting folders

How to set up Firefox Sync in Firefox for Android

Archived Messages

How to create and use mailing lists on Thunderbird

Make Firefox your default browser

Legacy browser support extension for Windows

About Picture-in-Picture in Firefox

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

How to disable the Enterprise Roots preference

Configure push email for Thunderbird for Android

Signatures

Use multiple profiles in Thunderbird

Filelink for Large Attachments

Customize Date and Time formats in Thunderbird

Font size and zoom - increase the size of web pages

Add or remove a search engine in Firefox

Manage notifications in Firefox for Android

How to opt out of studies on Firefox for Android

How do I restore my tabs from last time?

Display the Thunderbird menus and toolbar

Disable or re-enable Pocket for Firefox

Manage file types and download actions in Firefox

An extension changed my New Tab page or home page

Control audio or video playback with your keyboard

How to restore a browsing session from backup

Manage your extensions using the extensions button in the toolbar

Usernames and passwords are not saved

How do I use the Firefox spell checker?

Use Firefox in another language

Customize the Firefox home screen

Change the fonts and colors websites use

Tab preferences and settings

Set up Certificate Authorities (CAs) in Firefox

View PDF files using Firefox’s built-in viewer

Recommendations from Firefox

Manage extension shortcuts in Firefox

Collections in Firefox

Secure Firefox passwords with device sign-in

Auto-close open tabs in Firefox for Android

Change website appearance settings in Firefox

Gmail and Thunderbird for Android

Search with the Firefox address bar

Change the program used to open email links

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

Share data with Mozilla to help improve Firefox

How to Subscribe to News Feeds and Blogs

Manage saved passwords in Firefox for iOS

Customize Firefox using AutoConfig

Choose display languages for multilingual web pages

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

Thunderbird Android Telemetry

Use bookmark folders to organize your bookmarks

HTML5 audio and video in Firefox

Find and install extensions on Firefox for Android

FAQ Changing IMAP to POP

Thunderbird add-ons - frequently asked questions

Configuration Options for Accounts

Config Editor

Installing an Add-on in Thunderbird

Manage Firefox updates

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

Set Firefox for Android to open links in native apps

Choose your opening screen for Firefox for iOS

Change your wallpaper in Firefox for Android

New in Thunderbird for Android version 8

Cannot remove an add-on (extension or theme)

Using Dark Theme in Firefox for Android

Message List Columns

Customize Firefox using policies.json

Assign shortcuts to search engines

Dedicated profiles per Firefox installation

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

Firefox for Enterprise Kiosk mode

Importing Safari data into Firefox

Firefox Suggest for Mobile

Global Privacy Control in Firefox for Android

Add alt text to images in your PDFs using Firefox

How to fix preferences that won't save

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

Firefox doesn't save web form entries

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

Hyperlinks in Messages Not Working

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

Instant Messaging and Chat

How to Customize Toolbars

Manage saved passwords in Firefox for Android

Voice input in Firefox for Android

Access your add-ons with a Mozilla account

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

Scan QR codes in Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

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

How is Facebook Container different from Multi-account Containers?

Customize Firefox using Group Policy (Windows)

Access hidden tabs in Firefox

Firefox starts automatically when I restart Windows

Install themes to change the look of Thunderbird

Manage policies on macOS desktops

Managing policies on Linux desktops

Review installed extensions

How to fix Pocket login issues

Protect your container tabs with Mozilla VPN

End of support for Adobe Flash

Remove the Other Bookmarks folder from the Bookmarks Toolbar

How to configure Close Tab warnings in Firefox

How file downloads are handled in Firefox

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

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

Upgrading from an older version of Thunderbird

Multiwindow support on iPad for Firefox

Choose your preferred PDF viewer 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

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

How do I quit Firefox for Android?

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

How to Customize the New Mail Sound

Installing and Using another Language in the Dictionary

Uninstall Firefox for Android extensions

Customize your New Tab page to hide or display content

Enable or disable search engines on Firefox for iOS

Customize Firefox Home on iOS

Save passwords in Firefox for Android

Scan QR codes in Firefox for Android

Change the default language on Firefox for iOS

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

Turn search suggestions on or off on Firefox for iOS

New Tab settings in Firefox for iOS

Print simplified, clutter-free pages in Firefox

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

Debugging policy issues

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

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?

Will policies I set work if users already installed Firefox?

Make Firefox for Enterprise the default browser

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

Dangerous directories

Changing your two-step authentication device for your Mozilla account

Playing videos in Firefox for Android

Customize Firefox on macOS using configuration profiles

Pocket sponsored stories on new tabs

My privacy settings were changed from Custom to Standard

Tab context menu

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

Primary Password is replacing Master Password in Thunderbird

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 recently saved bookmarks from your homepage on Firefox for iOS

View bookmarks on your home screen

View recent tabs on your Firefox for Android homepage

View articles recommended by Pocket 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

View articles recommended by Pocket on your Firefox for iOS homepage

Change your wallpaper in Firefox for iOS

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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