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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

Manage local site storage settings

Firefox options, preferences and settings

Customize Firefox controls, buttons and toolbars

Connection settings in Firefox

Firefox's performance settings

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

Personalized extension recommendations

Firefox translation for Android

Restore the Menu bar in Firefox

Import settings and data into Thunderbird for Android

Back up and restore information in Firefox profiles

Global Privacy Control

Compacting folders

Add-ons in Firefox for iOS

Multi-Account Containers

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

Legacy browser support extension for Windows

Pop-up blocker settings, exceptions and troubleshooting

Allow or block media autoplay in Firefox

Automatically fill in your address on web forms

Switch from Chrome to Firefox

Message threading in Thunderbird - keep messages grouped by conversation

Recommendations from Firefox

How to manage your camera and microphone permissions with Firefox

Recover lost or missing Bookmarks

Filelink for Large Attachments

How to set the home page

Turn picture-in-picture mode controls on and off

Tips for assessing the safety of an extension

Manage your extensions using the extensions button in the toolbar

Change your default search settings in Firefox

Make Firefox your default browser

Signatures

Font size and zoom - increase the size of web pages

Export your Thunderbird Profile

How do I restore my tabs from last time?

Compact mode workaround in Firefox

JavaScript settings and preferences for interactive web pages

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

How to create and use mailing lists on Thunderbird

How to set up Firefox Sync in Firefox for Android

Recovering important data from an old profile

Customize Date and Time formats in Thunderbird

New in Thunderbird for Android version 8

Add or remove a search engine in Firefox

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

Control audio or video playback with your keyboard

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

Archived Messages

How to opt out of studies on Firefox for Android

How to disable the Enterprise Roots preference

Manage notifications in Firefox for Android

Auto-close open tabs in Firefox for Android

Add the Search bar to your Firefox toolbar

An extension changed my New Tab page or home page

Customize the Firefox home screen

Search with the Firefox address bar

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

Tab preferences and settings

Customize your New Tab page to hide or display content

How do I use the Firefox spell checker?

Using Multiple Profiles

Manage saved passwords in Firefox for iOS

Change the fonts and colors websites use

Share data with Mozilla to help improve Firefox

Use Firefox in another language

Manage optional permissions for Firefox extensions

Choose your preferred PDF viewer in Firefox

Thunderbird Android Telemetry

Usernames and passwords are not saved

Change the program used to open email links

View PDF files using Firefox’s built-in viewer

Find and install extensions on Firefox for Android

About Picture-in-Picture in Firefox

Use bookmark folders to organize your bookmarks

Manage my default search engines in Firefox for Android

Disable or re-enable Pocket for Firefox

Customize Firefox using Group Policy (Windows)

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

Secure Firefox passwords with device sign-in

Cannot remove an add-on (extension or theme)

Manage file types and download actions in Firefox

Thunderbird and Junk / Spam Messages

Installing an Add-on in Thunderbird

Customize Firefox using AutoConfig

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

Protect your container tabs with Mozilla VPN

Importing Safari data into Firefox

Block links from opening in external apps

Block and unblock websites with parental controls on Firefox

Using Dark Theme in Firefox for Android

FAQ Changing IMAP to POP

Config Editor

How to Customize the New Mail Sound

Display the Thunderbird menus and toolbar

Scan QR codes in Firefox for Android

Access your add-ons with a Mozilla account

Access hidden tabs in Firefox

Firefox starts automatically when I restart Windows

Assign shortcuts to search engines

Choose display languages for multilingual web pages

Dedicated profiles per Firefox installation

How to fix Pocket login issues

Collections in Firefox

Domains to allow for Firefox

Add alt text to images in your PDFs using Firefox

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

How do I quit Firefox for Android?

How to disable or change the Thunderbird start page

Thunderbird add-ons - frequently asked questions

Hyperlinks in Messages Not Working

Message List Columns

Configuration Options for Accounts

How to Subscribe to News Feeds and Blogs

Instant Messaging and Chat

Customize Firefox Home on iOS

Voice input in Firefox for Android

Change your Mozilla account password

Print simplified, clutter-free pages in Firefox

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

See active policies on Firefox for Enterprise

Sync logins in Firefox desktop

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

Playing videos in Firefox for Android

Firefox for Enterprise Kiosk mode

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

Tab context menu

Set Firefox for Android to open links in native apps

Remove the Other Bookmarks folder from the Bookmarks Toolbar

How file downloads are handled in Firefox

Import settings and data into Thunderbird

Open Firefox automatically when you start your computer

Firefox Suggest for Mobile

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

Names but no Email Addresses are Displayed

Enable or disable search engines on Firefox for iOS

Manage saved passwords in Firefox for Android

Change the default language on Firefox for iOS

Built-in themes in Firefox - alternative to complete themes

Turn search suggestions on or off on Firefox for iOS

Customize Firefox using policies.json

Install themes to change the look of Thunderbird

Debugging policy issues

Manage Firefox updates

Disable high contrast mode in Firefox

Manage extension shortcuts in Firefox

Review installed extensions

Dangerous directories

Pocket sponsored stories on new tabs

Grant camera access to Firefox for Android

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 your wallpaper in Firefox for Android

Change website appearance settings in Firefox

Manage your Mozilla account newsletter and email preferences

Site Permission Add-ons

Upgrading from an older version of Thunderbird

New in Thunderbird 115 Supernova

Unified Toolbar

Global Privacy Control in Firefox 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

Installing and Using another Language in the Dictionary

How to Customize Toolbars

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

Scan QR codes in Firefox for iOS

Cliqz Recommendations in Firefox

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

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

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

Manage policies on macOS desktops

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

Turn push notifications on or off in Firefox for iOS

Add a Firefox widget to your Home screen

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 configure Close Tab warnings in Firefox

How to restore a browsing session from backup

View recent tabs on your Firefox for iOS homepage

View recently saved bookmarks from your homepage on Firefox for iOS

View recent tabs on your Firefox for Android homepage

View articles recommended by Pocket on your Firefox for Android 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

Autofill Credit Cards in Firefox for iOS

Address autofill on Firefox

Multiwindow support on iPad for Firefox

Choose which browser opens Pocket web content on your Android

Wrong home page opens when I start Firefox - How to fix

Make Firefox the default browser on Android

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