Since YouTube changed to 3 massive thumbnails per row, this extension has been the answer. It lets you set the thumbnail size and number of thumbnails per row, or just revert to an older YouTube layout. Love it.

pls new update and fix new bug

Straight-up incredible!

Nostalgic, thanks!

This addon is really good, Hopefully I could predict that a star rating system swap toggle so you would do star ratings instead of a like to dislike ratio would be added one of the updates. :)

Works wonders. However, now youtube has added a new thing where it swaps the position of recommended videos and comments. It's very annoying! If you could update this addon to fix that, it would be really really great!