Youtube Fit To Screen Pla

On a small screen, watching YouTube without going fullscreen is painful - the player sits small in the middle of the page with wide empty gray bars to its left and right.

I built this for myself to fix that, and figured others might want it.

What it actually does (only on youtube.com/watch pages):

• Raises YouTube's internal max-player-width limit. YouTube caps the player width via internal CSS variables (--ytd-watch-flexy-max-player-width-*) - the extension overrides those caps so the player can actually grow.

• Compacts the right-hand recommendations sidebar so the freed space goes to the player instead.

• Forces the player's container elements to fill the available width, since YouTube otherwise leaves gaps.

• Slims the top YouTube nav bar for a bit of extra vertical room.

• Triggers YouTube's own resize logic after the changes so the video recalculates its size using the new limits.

Homepage, search, and subscriptions are untouched. No tracking, no settings, no account.