This page explains the technical documentation on how to control media in Firefox by using the Media Session API.
Multi-Account Containers is a Firefox WebExtension that lets you separate your work and personal browsing.
Learn more about how to participate in studies.
Pocket for Firefox is used to save a variety of content to one place with the click of a button.
Firefox Sync gives you the ability to sync your preferences across all your Firefox Desktop devices. Learn more.
How to opt out of studies
Learn about Firefox Nightly's error collection policy.
Fingerprinting Protection is an experimental feature that is under heavy development in Firefox.
Firefox 66 introduced DOM events changes for compatibility with legacy content. Learn more.