Greasy Fork is available in English.
Maximizes YouTube's video player to fill the entire browser viewport and fixes a few minor annoyances
当前为
This extension doesn't work with the new YouTube layout (Material Design) introduced in late August 2017. It has been rewritten as a new extension called "Maximizer For YouTube", which can be installed here:
http://greasyfork.icu/en/scripts/33243-maximizer-for-youtube