YouTube Fit-to-Screen Player

Makes the YouTube player fill your browser window instead of sitting small with empty space around it. Great for small screens.

Watching YouTube on a small screen without fullscreen is painful, the player is tiny with empty space all around it. This extension fixes that: • Makes the player fill the available width • Compacts the right-side recommendations sidebar • Slims the top nav bar for more vertical space Only active on youtube.com/watch pages. No data collected, no settings, no account needed.