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

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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

Access AI chatbots in Firefox

Manage local site storage settings

Customize Firefox controls, buttons and toolbars

Connection settings in Firefox

Firefox Translation

Web Push notifications in Firefox

How to manage your camera and microphone permissions with Firefox

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

Make Firefox your default browser

Firefox Password Manager - Alerts for breached websites

Refresh Firefox - reset add-ons and settings

Firefox's performance settings

Customize items on your Firefox New Tab page

Watch DRM content on Firefox

Filelink for Large Attachments

Restore the Menu bar in Firefox

Firefox translation for Android

Back up and restore information in Firefox profiles

Scan QR codes in Firefox for iOS

Global Privacy Control

Recover lost or missing Bookmarks

Pop-up blocker settings, exceptions and troubleshooting

Multi-Account Containers

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

Compacting folders

Automatically fill in your address on web forms

Sponsors on the home and new tab page

Manage marketing data settings in Firefox for Android

Scan QR codes in Firefox for Android

Manage my default search engines in Firefox for Android

Recommendations from Firefox

Customize your wallpapers

Turn picture-in-picture mode controls on and off

Restore bookmarks from backup or move them to another computer

Tips for assessing the safety of an extension

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

How to set the home page

Thunderbird and Gmail

Allow or block media autoplay in Firefox

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

Add-ons in Firefox for iOS

How to set up Firefox Sync in Firefox for Android

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

Use Firefox in another language

Import settings and data into Thunderbird

Import data from another browser

Font size and zoom - increase the size of web pages

JavaScript settings and preferences for interactive web pages

Sync bookmarks, tabs, history and passwords on Android

Switch from Chrome to Firefox

Personalized extension recommendations

How to change the Thunderbird layout

Use the sidebar to access tools and vertical tabs

Message threading in Thunderbird - keep messages grouped by conversation

Quick actions in the Firefox search bar

Usernames and passwords are not saved

Add the Search bar to your Firefox toolbar

Import Bookmarks from an HTML file

Control whether Firefox automatically fills in forms

How to disable the Enterprise Roots preference

Get started with the Mozilla VPN extension

Signatures

The difference between IMAP and POP3

Import settings and data into Thunderbird for Android

Use Firefox in Full Screen mode

Thunderbird add-ons - frequently asked questions

Compact mode workaround in Firefox

Add alt text to images in your PDFs using Firefox

Gmail and Thunderbird for Android

Change the fonts and colors websites use

Cannot remove an add-on (extension or theme)

Import Bookmarks and other data from Microsoft Edge

How do I use the Firefox spell checker?

Manage notifications in Firefox for Android

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

Manage file types and download actions in Firefox

Import login and password data from a file

Grant camera access to Firefox for Android

Customize Date and Time formats in Thunderbird

Manage your extensions using the extensions button in the toolbar

Open Firefox automatically when you start your computer

Import bookmarks and other data from Google Chrome

About Picture-in-Picture in Firefox

How to opt out of studies on Firefox for Android

How to restore a browsing session from backup

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

Legacy browser support extension for Windows

Control audio or video playback with your keyboard

Use multiple profiles in Thunderbird

Display the Thunderbird menus and toolbar

How do I restore my tabs from last time?

Switch from POP to IMAP account

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

Configure push email for Thunderbird for Android

Find and install extensions on Firefox for Android

Installing an Add-on in Thunderbird

Set Firefox Focus as default browser on Android

Customize Firefox using Group Policy (Windows)

Customize Firefox using policies.json

Search suggestions in Firefox Focus for iOS

Choose display languages for multilingual web pages

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

Change website appearance settings in Firefox

Get started with Thunderbird

Use bookmark folders to organize your bookmarks

Make Thunderbird the Default Mail Client

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

Importing Safari data into Firefox

How do I change my DNS settings?

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

Reset Firefox preferences to troubleshoot and fix problems

FAQ Changing IMAP to POP

Configuration Options for Accounts

Config Editor

Customize Firefox Home on iOS

Manage saved passwords in Firefox for iOS

Autocomplete settings in the Firefox Focus address bar

Install themes to change the look of Thunderbird

Add trusted websites to your allow list in Firefox Focus

Set up Certificate Authorities (CAs) in Firefox

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

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

Profile Manager - Create and remove Thunderbird profiles

Manage optional permissions for Firefox extensions

What information does Mozilla VPN collect?

Recommended Firefox privacy and security settings for families

Choose your preferred PDF viewer in Firefox

Disable VPN protection for a specific website

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

Tab preferences and settings

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

Disable or re-enable Pocket for Firefox

Enable or disable search engines on Firefox for iOS

Change your default search settings in Firefox

An extension changed my New Tab page or home page

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

Customize Firefox using AutoConfig

Firefox for Enterprise Kiosk mode

Add a Firefox widget to your Home screen

How to configure Close Tab warnings in Firefox

HTTPS-Only Mode in Firefox Focus for Android

Change your wallpaper in Firefox for Android

Notifications in Thunderbird

A program on your computer interferes with the Mozilla VPN extension

On-device AI models in Firefox

Change the default language of Firefox for Android

IMAP Synchronization

Configuration Options for Attachments

How to Customize the New Mail Sound

Get help with Firefox Developer Edition

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

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

Add search engines in Firefox Focus for iOS

Privacy panel - Remote content and cookie settings in Thunderbird

Firefox starts automatically when I restart Windows

Assign shortcuts to search engines

Getting started with the Thunderbird main window

Dedicated profiles per Firefox installation

Enforce policies on Firefox for Enterprise

Manage extension shortcuts in Firefox

Protect your container tabs with Mozilla VPN

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

Set Firefox for Android to open links in native apps

How to opt out of studies on Firefox for iOS

Automatically fill in credit card information on Firefox for Android

Choose your opening screen for Firefox for iOS

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

Site Permission Add-ons

Firefox Suggest for Mobile

Thunderbird Mobile Telemetry

New in Thunderbird for Android version 8

Getting started with Thunderbird for Android

Manage your Monitor notifications

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

Message List Columns

Thunderbird makes unrequested connections

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

How to Customize Toolbars

Built-in themes in Firefox - alternative to complete themes

Access hidden tabs in Firefox

Firefox Focus main Menu

Change Firefox Lite to Night Mode

Manage Firefox updates

Disable high contrast mode in Firefox

Collections in Firefox

Change your two-step authentication device for your Mozilla account

Use Web Apps with Firefox for Android

End of support for Adobe Flash

Unable to uninstall add-ons (extensions or themes)

Text Encoding no longer available in the Firefox menu panel

OpenPGP Recipient Alias Configuration

Exclude applications from Mozilla VPN protection

Change your theme in Firefox Focus for Android

Personalize Firefox with colorways

How to move the address bar in Firefox for iOS

Domains to allow for Firefox

Upgrading from an older version of Thunderbird

Install the Firefox Relay extension in Firefox for Android

What languages is Mozilla VPN available in?

userChrome.css and .js and userContent are unsupported

Enabling the Pocket Share extension in iOS

Change your language in Pocket

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

Appearance Panel - Layout, Message List, Card View, Table View, Sorting and Threading settings

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

Add or remove a search engine in Firefox

Thunderbird and Logjam

Customize the Firefox home screen

Save passwords in Firefox for Android

Voice input 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

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

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

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

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

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

Playing videos in Firefox for Android

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 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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