Simple and effective

Works perfect save for one thing, the hotkey registers even when writing a comment on YouTube. Every single time I use the letter W it throws it in/out of full window mode. Any chance of sorting that? Other YouTube hotkeys don't trigger outside the video (such as space bar not unpausing and pausing it when hit, when writing up a comment)

Works perfectly well, except for one thing: you should unfocus your button once clicked in order to make that pressing space pause/unpause the video instead of enable/disable the windowed fullscreen feature. If you fix that, I give you the 5th star.

Edit : thanks. If you could fix that for other youtube buttons (fullscreen, mute/unmute, etc) even if I know it's not caused by your mod.

This is what I was looking for. Amazing work! you can fullscreen without worrying about double clicking to check another TAB ♥

Great addon! Just a small nitpick, would it be possible to add an option to make videos always start not maximized?

great addon, need also to include other vid sites espec. for news eg's: news.yahoo.com, abc cbs nbc fox msnbc? thanks!!