Add-ons Update – 2017/06

Here’s the monthly update of the state of the add-ons world.

The Road to Firefox 57 explains what developers should look forward to in regards to add-on compatibility for the rest of the year. So please give it a read if you haven’t already.

The Review Queues

In the past month, our team reviewed 2,209 listed add-on submissions:

  • 1202 in fewer than 5 days (54%).
  • 173 between 5 and 10 days (8%).
  • 834 after more than 10 days (38%).

235 listed add-ons are awaiting review.

If you compare these numbers with last month’s, you’ll see a very clear difference, both in reviews done and add-ons still awaiting review. The admin reviewers have been doing an excellent job clearing the queues of add-ons that use the WebExtensions API, which are generally safer and can be reviewed more easily. There’s still work to do so we clear the review backlog, but we’re on track to being in a good place by the end of the month.

However, this doesn’t mean we won’t need volunteer reviewers in the future. If you’re an add-on developer and are looking for contribution opportunities, please consider joining us. Visit our wiki page for more information.

Compatibility Update

We published the blog post for 55 and the bulk validation script will be run in a week or so. The compatibility post for 56 is still a few weeks away.

Make sure you’ve tested your add-ons and either use WebExtensions or set the multiprocess compatible flag in your manifest to ensure they continue working in Firefox. And as always, we recommend that you test your add-ons on Beta.

You may also want  to review the post about upcoming changes to the Developer Edition channel. Firefox 55 is the first version that will move directly from Nightly to Beta.

If you’re an add-ons user, you can install the Add-on Compatibility Reporter to identify and report any add-ons that aren’t working anymore.


We would like to thank the following people for their recent contributions to the add-ons world:

  • Tushar Saini
  • harikishen
  • Geoff Lankow
  •  Trishul Goel
  • Andrew Truong
  • raajitr
  • Christophe Villeneuve
  • zombie
  • Perry Jiang
  • vietngoc

You can read more about their work in our recognition page.

4 responses

  1. Juraj M. wrote on :

    Very nice improvement! Great work!

    1. Herman Cost wrote on :

      There is a long list of businesses that perished because of a failure to listen to their customers. Mozilla seems headed right down that trail. I have been a Firefox user since the very beginning. but that will end with Firefox 57. Its a shame.

  2. Knet wrote on :

    The problem I see is that it seems Mozilla is requiring developers like Siber Systems’ Roboform to conform to the new Firefox 57 standards in new versions of their browser, but Mozilla accepts that this causes the new toolbar in Roboform to cover-up existing Firefox “Find” toolbar, and requires that users turn back on the toolbar each time they open a browser window. I do not know whether this problem is an inherent dysfunction in the current version of Firefox, whether it is a problem with Mozilla Fox app reviewers (if apps are really required to be review at all), if possibly Siber Systems just has poor programmers, or if it is any combination of these. While I think that the problem is just poor developers at Siber Systems, I would hope that Mozilla is providing simple means (and effective app review ) for developers to retool their apps to continue to support their users.

  3. Steve Brown wrote on :

    It won’t be long now before Firefox is completely dead. Update 57 is the update I move to a completely different browser.

    Mozilla is such a joke now. What happened to you guys?