Suggestions

The w key will toggle the script in the current tab.
Use Resize Video To Window Size for Crunchyroll, Vimeo, and a few other sites.

Screenshots

After loading the video webpage you will see:

It appears above the rest of the site, so you can scroll down for the description, related links, etc.

Changelog

https://github.com/Zren/ResizeYoutubePlayerToWindowSize/blob/master/changelog.md

v138 - January 9, 2024

Bind toggle to keydown instead of keyup so that pressing Ctrl+W to close a tab does not trigger the YTWP toggle when you focus on a Youtube tab.

v137 - November 1, 2023

Bind to yt-page-data-fetched and yt-navigate-finish to fix the back button not cleaning up the window view since yt-navigate-start does not always fire (Issue #72 and #76)
Bind keyup not keypress (which is deprecated). Also cancel event during keydown. This fixes the w key also changing the caption box style. It should also fix changing the toggle key to Escape (Issue #71)

v139 - April 10, 2024

Fix page top margin as certain elements seem to ignore the CSS properties completely (Issue #88)