I put a WebGL warp shader inside a Chrome extension so ultrawide monitors stop wasting a third of the screen

I own a 3440x1440 monitor. Roughly 90% of video on the internet is 16:9. That means for two years, a third of my expensive screen was black bars for most of the day. The existing fixes all do linear stretch — scale the video uniformly until it fills the width. It works, and it makes every face on screen about 30% wider. Your brain never stops noticing. So I built Ultrawider, which does a non-linear warp instead: the central ~60% of the frame maps 1:1 (mathematically untouched), and all of the st