21:9 video, no black bars.
Almost everything online is filmed for 16:9 screens. On an ultrawide monitor, that means black bars around every video you watch. UltraWide Video zooms or stretches any video, on any website, so it fills your screen edge to edge.
Free • 4,000+ users • Works on every website
Pick the mode that fits what you're watching — then forget the extension is even there.
Scales the video up until it fills the screen, keeping proportions perfect. Ideal for 21:9 movies trapped inside 16:9 uploads — you lose nothing but the bars.
Widens the picture horizontally to fill the screen without cropping a single pixel. Great for gameplay, sports and talking-head videos.
One tap to target 16:9, 18:9, 21:9, 24:9 or 32:9 — plus a fine-grained scale slider from 1× to whatever your super-ultrawide needs.
Switch modes or nudge the zoom with ⌘⇧↑ / ⌘⇧↓ (or Ctrl on Windows) without ever leaving fullscreen.
Turn on “Apply only in fullscreen” and pages look completely normal while you browse — the magic happens only when you go fullscreen.
One extension for YouTube, Netflix, Prime Video, Disney+, Twitch, embedded players and everything in between — including videos inside iframes.
No per-site setup. If it plays video in your browser, UltraWide Video can fill your screen with it.
Most online video is published in 16:9. An ultrawide screen is 21:9 (or even 32:9), so your browser adds black bars on the sides — pillarboxing — to make the formats match. Cinematic 21:9 films uploaded inside a 16:9 frame even get bars on all four sides. Here's the full story.
Install UltraWide Video, open any YouTube video, click the extension icon and choose Zoom or Stretch. The video instantly fills your screen — step-by-step guide here.
Yes. UltraWide Video works on every website that plays video in the browser, including Netflix, Disney+, Prime Video, Twitch, Vimeo and embedded players.
Zoom scales the video up proportionally until it fills the width of your screen — nothing distorts, but the parts that overflow are cropped. Stretch widens the image to fit without cropping anything, at the cost of slight horizontal distortion. Try both for two seconds and you'll know which one you prefer.
Yes — completely free on both the Chrome Web Store and Microsoft Edge Add-ons.
Your settings live locally in your browser. The extension only gathers anonymized usage analytics that can't be tied to you, and nothing is ever shared or sold — details in the privacy policy.
The black bars on movies are called letterboxing. Here's why they exist, why directors shoot that wide, and when you can safely remove them — and how.
Read →What 21:9 actually means, common ultrawide resolutions, how it compares to 16:9, and why movies fit it perfectly while web video shows black bars.
Read →Every ultrawide resolution compared — 2560×1080, 3440×1440, 3840×1600, 5120×1440, 5120×2160 — with pixel counts, PPI and real GPU demand explained.
Read →
UltraWide Video removes black bars from YouTube, Netflix, Prime Video and any other site — zoom or stretch any video to fill your 21:9 or 32:9 screen.