Advanced and experimental features
Learn tips beyond the basics and try features before they're released to the public.
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.
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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.
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Configuration Editor for Firefox
The Configuration Editor (about:config page) lets you view, change, or reset advanced preference settings in Firefox. Learn more.
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4 weeks, 1 day ago
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.
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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.
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2 weeks, 1 day ago
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.
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Resist Fingerprinting
Firefox's Advanced Preferences to resist fingerprinting can help prevent websites from uniquely identifying your device but can cause problems. Learn more.
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4 weeks, 1 day ago
Firefox Labs - Explore experimental features in Firefox
Discover and test experimental features with Firefox Labs, accessible directly from your Firefox settings.
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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''.
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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.
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Sync custom preferences
Firefox Sync allows you to sync your preference settings across all your Firefox Desktop devices. Learn more.
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Configure networks to disable DNS over HTTPS
DNS over HTTPS (DoH) is a feature that everyone should use to enhance privacy but in a few circumstances, it can be undesirable. Learn more.
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2 weeks, 5 days ago
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.
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Firefox advanced customization and configuration options
Advanced Firefox customization options, about:config and userChrome.css/userContent.css modifications, are not recommended. Learn more.
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Fakespot results in Firefox Suggest
Shop smarter with Fakespot-powered sponsored searches in Firefox Suggest.
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