Instellings

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

In Engels

Make Firefox your default browser on Windows

Add-on Badges

Firefox Page Info window

Firefox options, preferences and settings

Thunderbird and Junk / Spam Messages

Manage local site storage settings

Customize Firefox controls, buttons and toolbars

Connection settings in Firefox

Firefox Translation

Web Push notifications in Firefox

Access AI chatbots in Firefox

How to manage your camera and microphone permissions with Firefox

Refresh Firefox - reset add-ons and settings

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

Make Firefox your default browser

Firefox Password Manager - Alerts for breached websites

Firefox's performance settings

Watch DRM content on Firefox

Filelink for Large Attachments

Global Privacy Control

Back up and restore information in Firefox profiles

Restore the Menu bar in Firefox

Firefox translation for Android

Personalized extension recommendations

Pop-up blocker settings, exceptions and troubleshooting

Scan QR codes in Firefox for iOS

Recover lost or missing Bookmarks

Manage marketing data settings in Firefox for Android

Manage my default search engines in Firefox for Android

Compacting folders

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

Multi-Account Containers

Use the sidebar to access tools and vertical tabs

Restore bookmarks from backup or move them to another computer

Allow or block media autoplay in Firefox

How to set the home page

Tips for assessing the safety of an extension

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

Turn picture-in-picture mode controls on and off

Recommendations from Firefox

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

Quick actions in the Firefox search bar

Font size and zoom - increase the size of web pages

How to set up Firefox Sync in Firefox for Android

Thunderbird and Gmail

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

JavaScript settings and preferences for interactive web pages

Import data from another browser

Use Firefox in another language

Add-ons in Firefox for iOS

Sync bookmarks, tabs, history and passwords on Android

Import settings and data into Thunderbird

Import bookmarks and other data from Google Chrome

Add the Search bar to your Firefox toolbar

Change your default search settings in Firefox

Message threading in Thunderbird - keep messages grouped by conversation

How to change the Thunderbird layout

Control whether Firefox automatically fills in forms

Get started with the Mozilla VPN extension

Manage your extensions using the extensions button in the toolbar

Gmail and Thunderbird for Android

Use Firefox in Full Screen mode

Import settings and data into Thunderbird for Android

Usernames and passwords are not saved

Compact mode workaround in Firefox

Customize Date and Time formats in Thunderbird

Open Firefox automatically when you start your computer

Import Bookmarks from an HTML file

Manage file types and download actions in Firefox

Signatures

Switch from Chrome to Firefox

An extension changed my New Tab page or home page

Import Bookmarks and other data from Microsoft Edge

Thunderbird add-ons - frequently asked questions

Manage notifications in Firefox for Android

How to restore a browsing session from backup

How do I use the Firefox spell checker?

Automatically fill in your address on web forms

How to disable the Enterprise Roots preference

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

Cannot remove an add-on (extension or theme)

The difference between IMAP and POP3

Add alt text to images in your PDFs using Firefox

How do I restore my tabs from last time?

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

Legacy browser support extension for Windows

About Picture-in-Picture in Firefox

Display the Thunderbird menus and toolbar

Scan QR codes in Firefox for Android

Profile Manager - Create and remove Thunderbird profiles

Import login and password data from a file

How to opt out of studies on Firefox for Android

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

Configure push email for Thunderbird for Android

Change the fonts and colors websites use

Control audio or video playback with your keyboard

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

Switch from POP to IMAP account

Add or remove a search engine in Firefox

Customize Firefox using policies.json

Manage optional permissions for Firefox extensions

Get started with Thunderbird

Use bookmark folders to organize your bookmarks

Find and install extensions on Firefox for Android

Use multiple profiles in Thunderbird

Customize Firefox using AutoConfig

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

Grant camera access to Firefox for Android

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

Export bookmarks to Safari

Tab preferences and settings

Installing an Add-on in Thunderbird

Manage saved passwords in Firefox for iOS

Add search engines in Firefox Focus for iOS

Customize Firefox using Group Policy (Windows)

Search suggestions in Firefox Focus for iOS

Choose display languages for multilingual web pages

Importing Safari data into Firefox

HTTPS-Only Mode in Firefox Focus for Android

Thunderbird Mobile Telemetry

Disable VPN protection for a specific website

Audio and video files in Firefox

Customize items on your Firefox New Tab page

Make Thunderbird the Default Mail Client

Configuration Options for Accounts

Enable or disable search engines on Firefox for iOS

Customize Firefox Home on iOS

Set up Certificate Authorities (CAs) in Firefox

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

Sponsors on the home page and New Tab page

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

Change your wallpaper in Firefox for Android

How do I change my DNS settings?

Choose your preferred PDF viewer in Firefox

Block and unblock websites with parental controls on Firefox

Reset Firefox preferences to troubleshoot and fix problems

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

FAQ Changing IMAP to POP

How to Subscribe to News Feeds and Blogs

Assign shortcuts to search engines

Protect your container tabs with Mozilla VPN

Collections in Firefox

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

Set Firefox for Android to open links in native apps

New in Thunderbird for Android version 8

On-device AI models in Firefox

How to search IMDB, Wikipedia and more from the address bar

Change the default language of Firefox for Android

How do I quit Firefox for Android?

IMAP Synchronization

How to disable or change the Thunderbird start page

Config Editor

How to Customize the New Mail Sound

How to reset the default user agent on Firefox

Access your add-ons with a Mozilla account

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

Built-in themes in Firefox - alternative to complete themes

Autocomplete settings in the Firefox Focus address bar

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

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

Privacy panel - Remote content and cookie settings in Thunderbird

Install themes to change the look of Thunderbird

Add trusted websites to your allow list in Firefox Focus

Getting started with the Thunderbird main window

Dedicated profiles per Firefox installation

Manage extension shortcuts in Firefox

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

Firefox for Enterprise Kiosk mode

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

Manage Firefox with Microsoft Endpoint Manager (Intune)

How to opt out of studies on Firefox for iOS

Text Encoding no longer available in the Firefox menu panel

How to configure Close Tab warnings in Firefox

Personalize Firefox with colorways

My default search engine changed after updating Firefox

Change website appearance settings in Firefox

Recommended Firefox privacy and security settings for families

Site Permission Add-ons

Why aren’t my add-ons working on some websites?

Thunderbird Matrix Chat FAQ

How to delete an email mask

Notifications in Thunderbird

How to fix preferences that won't save

Changes to toolbars and window sizes are not saved

Change the program used to open email links

Firefox doesn't save web form entries

How do I change to the desktop view in Firefox for Android?

Using Dark Theme in Firefox for Android

Creating a Newsgroup Account

Message List Columns

Configuration Options for Attachments

Thunderbird makes unrequested connections

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

How to Customize Toolbars

Get help with Firefox Developer Edition

Manage saved passwords in Firefox for Android

Voice input in Firefox for Android

Change the default language on Firefox for iOS

Set Firefox Focus as default browser on Android

Print simplified, clutter-free pages in Firefox

Firefox starts automatically when I restart Windows

Feed reader replacements for Firefox

Firefox Focus main Menu

Manage Firefox updates

Disable high contrast mode in Firefox

Enable auto-fill on your Android devices

Change your two-step authentication device for your Mozilla account

Playing videos in Firefox for Android

Add a Firefox widget to your Home screen

Use Web Apps with Firefox for Android

End of support for Adobe Flash

Unable to uninstall add-ons (extensions or themes)

Automatically fill in credit card information on Firefox for Android

OpenPGP Recipient Alias Configuration

Change your theme in Firefox Focus for Android

Choose your opening screen for Firefox for iOS

How to move the address bar in Firefox for iOS

Enable light or dark mode in MDN

X-Mouse Button Control in Firefox 110

Install the Firefox Relay extension in Firefox for Android

How do I change my Privacy features?

What languages is Mozilla VPN available in?

Firefox Suggest for Mobile

Block links from opening in external apps

Getting started with Thunderbird for Android

Change your location for a specific website

A program on your computer interferes with the Mozilla VPN extension

Manage your Monitor notifications

Restore the default Smart Bookmarks Folders

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

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

Thunderbird and Logjam

Customize the Firefox home screen

Save passwords in Firefox for Android

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

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

Access hidden tabs in Firefox

Change themes in Firefox for iOS

How to use collections on addons.mozilla.org

Debugging policy issues

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

Change Firefox Lite to Night Mode

Manage policies on macOS desktops

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?

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

Enable auto-fill on your iPhone or iPad

Set Firefox as your default browser on Lockwise for iOS

Dangerous directories

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

View and control data collected by Mozilla VPN

Set Firefox as your default browser from the notification panel on Android

Exclude applications from Mozilla VPN protection

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

Change your wallpaper in Firefox for iOS

Receive only important emails sent through your masks with Firefox Relay Premium

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

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

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?

Explore by product

Explore by topic

Browse by product

Browse all forum threads by topic

Get help with

Search Support

In Engels