Add-on Compatibility for Firefox 48

Firefox 48 will be released on August 2nd. Here’s the list of changes that went into this version that can affect add-on compatibility. There is more information available in Firefox 48 for Developers, so you should also give it a look.


XPCOM and Modules


Let me know in the comments if there’s anything missing or incorrect on these lists. If your add-on breaks on Firefox 48, I’d like to know.

The automatic compatibility validation and upgrade for add-ons on AMO will happen in a few weeks, so keep an eye on your email if you have an add-on listed on our site with its compatibility set to Firefox 47.

5 responses

  1. custom.firefox.lady wrote on :

    First paragraph should be …more info available in Fx *48* for developers.

    1. Jorge Villalobos wrote on :

      Fixed, thanks.

  2. Kohei Yoshino wrote on :

    Posted the Japanese translation:

    1. Jorge Villalobos wrote on :


  3. AN Other wrote on :

    This causes All-In-One Sidebar to be sluggish and bookmarks does not open in all-in-one sidebar but separate window.

    I’m on the latest El Capitan version on OSX if that is of any use.