Enhancer for YouTube add-on for Firefox possibly discontinued due to problems with Mozilla's review process

The Enhancer for YouTube add-on has been delisted from Mozilla's add-ons repository. This isn't the first time the extension has been delisted, it was removed and reinstated in 2024.

But this time, it may be gone for good. You may have read my review of the extension 6 years ago.

When I read about it on r/Firefox, I thought the delisting might have been exaggerated, because I still have Enhancer installed, and use the add-on on a daily basis, especially the volume booster option which is great for podcasts, and videos that have terrible closed captions.

But when I checked the Extensions and Themes page in my Firefox, I noticed that the links to the author's page on AMO, the add-on's home page, and rating are not displayed. Indeed, the add-on's URL no longer exists. This is Maxime RF's (the developer's) page on AMO, it appears blank.

Here's an Internet Archive link for the extension's page, the latest snapshot is from August 12, 2025. The add-on had the "Recommended by Mozilla" badge, which shows how popular it was. It had over 600,000 users.  The last version of Enhancer for YouTube was 2.0.130.1, which was released on November 24, 2024. And it's the one I have installed.

A quick check on the add-on's official web page says that "Distribution stopped for Firefox, GG Mozilla! Don't ask me why, ask Mozilla...".  It also says that the extension only works on Chrome and Edge, and that Firefox, Brave, Opera, etc., are unsupported. The developer's tone clearly suggests that Mozilla could be to blame for the issue.

Digging a little more, I stumbled onto this reddit post that had a screenshot with a statement from Maxime (from 5 months ago) that said version 3 of Enhancer will only be available for Firefox if Mozilla changes its review process, hinting that the procedure was a burden on developers. I checked when v3 of the add-on was released for Chrome, it seems to have been updated from version 2 to 3 sometime in December 2024 (according to the Internet Archive).

Two add-on developers, Juraj Mäsiar (Group Speed Dial), and Brawl (Reverse Image Search), chimed in on reddit, to point out that Mozilla's had recently changed the privacy policy for add-ons, more details available here. Essentially, add-ons need to display a data consent dialog, even if they don't collect any data.

But, Brawl mentioned that Reverse Image Search was hit by the policy despite the add-on not tracking users, and adding a data consent dialog. That extension was removed for almost 2 weeks, that could be very frustrating.

It is quite possible that such rejections by Mozilla's reviewers could have caused Maxime to remove Enhancer from the AMO. Mozilla once irked Raymond Hill, the creator of uBlock Origin, and the issue resulted in the developer removing uBlock Origin Lite from the AMO, and distributing it exclusively via GitHub. Things like this could be bad for both developers and users. It could even result in users switching to different browsers that support an add-on they like.

As for alternatives to Enhancer for YouTube for Firefox, there are some options that offer a similar experience, I like Improve YouTube which Martin reviewed (formerly called Improved YouTube).

Source

Hope you enjoyed this news post. Feedback welcome.

Posted Monday 18 August 2025 at 6:34 pm AEST (my time).

News posts... 2023: 5,800+ | 2024: 5,700+ | 2025 (till end of July): 3,458

RIP Matrix