YouTube Thumbnail Size Fixer by Chris

4.4 Stars out of 5

2 reviews

Rated 3 out of 5
by Firefox user 18960753, 19 days ago
It kind of works.
Youtube changed my home page to show only 3 videos per row, and this addon fixes it. But I have to manually click the addon and change the settings everytime I open youtube.
Developer response
posted 8 days ago
Just released an update to v1.1 and hoping it fixed your issue! Let me know!
Rated 3 out of 5
by magiclantern, a month ago
This actually worked great for a while to counteract the terrible UI design YouTube has been implementing lately. However as of May 1, 2025 this extension no longer works for me. Not sure if it's due to a recent Firefox update or a recent YouTube update, but I'm back to the stupid 2 or 3 thumbnail across situation.

Update in response to developer response: Tried changing number of columns, refresh browser, quit and re-open browser and did not work. Another potential source of this add-on no longer working could be a problem with other extensions...
Developer response
posted a month ago
UPDATE: I just released a new version 1.1 that I hope fixes your issues.

Oh no!!! YouTube UI is finicky. I've experienced that it sometimes requires a page refresh and/or opening the plugin settings and changing the column type and saving again. Hoping that works for ya!