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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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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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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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.

Firefox Firefox Last updated: 1 week, 3 days ago

About Studies

How to opt out of studies

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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.

Firefox Firefox Last updated: 3 days, 1 hour ago

Resist Fingerprinting

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

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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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Unique identifiers in Firefox

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

Firefox Firefox Last updated: 1 day, 6 hours ago
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