This is pretty cool, but I gave four stars for a reason. The newer version of YouTube's UI does not support some of the features in the options and there is no way through this extension to get the HTML5 viewer. Great app either way!

Useful customisations which are simple and easy to use.

Does what it says. No problems so far.

Nice slippa reklam avbrott och bakspelare.......

I like it, but I want to pin the video on the left side not only on the right side

Нормально, годнота. Пользоваться можно.

Good tools

I like it. Very nice

Várias opções úteis, mas...
Poderia haver uma opção para logar automaticamente na conta do Youtube

Very nice to be!!!

Good tool to customize youtube. Plz add horizontal flipping function.

初次使用,感覺不錯

Seit Update brauchen im Hintergrund Pausierte Videos 2 Klicks für Play. Der erste wird scheinbar nicht erkannt.

I like the layout!

Perfecto

It works well , and helps customize the YouTube Experience.
Using it on MacBook Air 2008 with Firefox 48.

elcomplemento funciona de maravilla