Advanced and experimental features

How to enable Windows SSO login in Firefox

Use Windows single sign-on (SSO) to log in to Microsoft, work, and school accounts with credentials from your Windows 10 or 11 operating system.

Last updated: 3/14/23

Configuration Editor for Firefox

The Configuration Editor (about:config page) lets you view, change, or reset advanced preference settings in Firefox. Learn more.

Last updated: 6/15/22

Compact mode workaround in Firefox

Learn about a workaround to activate compact mode, if you need to. This feature isn't supported and we still recommend using normal mode.

Last updated: 6/6/22

Control audio or video playback with your keyboard

This page explains the technical documentation on how to control media in Firefox by using the Media Session API.

Last updated: 8/21/21

Firefox's protection against fingerprinting

Fingerprinting Protection in Firefox protects you from websites that try to identify you based on a set of unique characteristics.

Last updated: 1 week, 3 days ago

About Studies

How to opt out of studies

Last updated: 10/6/21

Enable AI chatbots in Firefox

Using AI chatbots is optional. Learn more about the providers you can choose, how to remove the shortcut and what to keep in mind when using AI chatbots.

Last updated: 2 days, 21 hours ago

Resist Fingerprinting

Resist Fingerprinting in Firefox limits the personal characteristics of the operating system and hardware exposed to websites

Last updated: 10/22/24

Canary domain - use-application-dns.net

Network administrators may configure their networks to modify DNS requests for the following special-purpose domain, called a ''canary domain''.

Last updated: 4/16/22

WebXR Permission Info Page

This article explains Firefox's virtual reality features and how to manage permissions for websites that ask to access your VR devices.

Last updated: 10/11/24

Use the Eyedropper tool in Firefox to sample colors

Learn to use Firefox's Eyedropper tool to identify and copy web color Hex values quickly – enhance projects with precise color matching.

Last updated: 4/22/24

Firefox Labs - Explore experimental features in Firefox

Discover and test experimental features with Firefox Labs, accessible directly from your Firefox settings.

Last updated: 9/26/24

Sync custom preferences

Firefox Sync allows you to sync your preference settings across all your Firefox Desktop devices. Learn more.

Last updated: 6/17/22

Firefox advanced customization and configuration options

Advanced Firefox customization options, about:config and userChrome.css/userContent.css modifications, are not recommended. Learn more.

Last updated: 6/24/24

Fakespot results in Firefox Suggest

Shop smarter with Fakespot-powered sponsored searches in Firefox Suggest.

Last updated: 10/8/24

Unique identifiers in Firefox

Overview of unique identifiers used by Firefox to deliver features like notifications, telemetry and personalized settings.

Last updated: 1 day, 3 hours ago

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