Nice. Exactly what I needed and a bit more.
Maybe author need to work on discoverability though, couldn't find this extension searching for "smaller thumbnails".

Does everything it says it would! I only have one suggestion, please let us remove the games too. Thanks so much!

Die wohl wichtigste Erweiterung seit der massiven unübersichtlichkeit seitens Youtube für PC user. Meine Empfehlung ist größe 8 oder 10.

Thank you! The new giant thumbnails are trash...

EDIT: Two days after my initial review the developer has updated it and it works, 5stars! :)

Currently it does not work, once youtube is refreshed you have to manually change again and save. I thought it was because it was conflicting with other add-ons, but after deactivating everything it still doesn't work. A bit sad because it was exactly what I was looking for.

Thanks, works well! I like that you can choose how many video thumbnails (4, 5, 6, ...) you want to see per row. Well done!

Does what it says, what more do you want?

Works perfectly for me.