YouTube Fast Fullscreen Toggle (dggbkbndbcaknaeobfieifmdcncmpaba): Avoid the lag when entering/exiting fullscreen on a YouTube video - by hiding the heavy fluff while transitioning... Read More > or Download Now >
YouTube Fast Fullscreen Toggle for Chrome
More About YouTube Fast Fullscreen Toggle
Supported fullscreen transitions:
- Clicking the fullscreen button
- Pressing the F key
- Double-clicking the video
Unsupported fullscreen transitions (still slow):
Note that Firefox doesn't seem to have the same issue as Chrome; so in Firefox the improvement is barely noticeable.
In Vivaldi, there is unfortunately an intermediate step in the fullscreen transition, which I can't seem to do anything to avoid. It appears to be due to the toolbars being hidden/shown at a different moment to when the browser actually enters/leaves fullscreen.
This bug's been present for years now, and I got so sick of it that I spent one night experimenting to find a way to avoid it - and I found one! The extra HTML content on the page (playlist, recommendations, comments, description, likes, etc.) is pretty heavy, and when you toggle fullscreen, YouTube moves it around in the DOM, which ends up incuring a fair bit of processing. I've worked out that it's significantly faster to hide that extra content before transitioning, then display it again afterwards once it's reached its new position.