Together, We Build a Better Web

A community-driven Web developer engagement initiative focused on the backward compatibility and regressions in Firefox. Documents, latest updates & more.

Latest Blog Post

Today Mozilla has shipped Firefox 72 Beta and Developer Edition along with Firefox 71. The new pre-release version comes with a couple of changes known to affect real-world websites, including the user interaction requirement for push notification permissions, content type sniffing and WebRTC simulcast attributes.

Have a look at those Firefox 72 site compatibility notes to get ready for the final version shipping in January. Also, don’t forget to install our Firefox DevTools extension which now has more than 600 users!

Documents

Browse by Version

Browse by Category

Browse by Status