UltraWideo 作者： nonwip

Stop watching videos with black bars eating half your screen.

UltraWideo removes black bars and resizes any video to fill your display — on literally any site that plays video. One click, instant result.

Made for EVERY screen — not just ultrawide
Ultrawide monitor (21:9, 32:9), a regular 16:9 laptop or TV, or watching old 4:3 uploads? UltraWideo reshapes the video to fit your screen perfectly. No more black bars on the sides. No more black bars on the top and bottom. Just full, edge-to-edge video.

Why people switch to UltraWideo
Other extensions break on certain sites, stop detecting the video, or wreck the page layout. UltraWideo doesn't. It finds videos automatically — even tiny embeds and players hidden inside other players — and only activates when there's actually a video to fix. No "video not detected." No broken pages.

What you get for free
▸ Works on every site — any page that plays video.
▸ Works in fullscreen AND inline.
▸ Automatic video detection — any size, even the smallest embedded players.
▸ Four modes — Normal, Upscale to fill, Stretch to fit, or dial in a Custom zoom.
▸ Scale & pan — fine-tune the zoom and shift the frame to get the exact crop you want.
▸ Gestures — cycle modes and adjust zoom with a scroll, trackpad pinch or touch gestures.
▸ Keyboard shortcuts — fully customizable in your browser's shortcut settings.
▸ Light & dark theme — inherits your system appearance or overrides it with your preference.
▸ Distraction-free — an auto-hiding option keep it out of your way and reduced-motion to reduce animations.
▸ 40+ languages — UltraWideo speaks your language.
▸ Cross-browser — Chrome, Firefox and every Chromium and Gecko based browser.
▸ 16 accent colors — make the interface yours.
▸ Free forever — the core experience costs nothing.

Go further with Pro
Support development and unlock the power features:
▸ Per-site settings — each site remembers its own setup. Applied automatically, every time.
▸ Per-video settings — save a unique crop for individual videos and pages.
▸ Letterbox detection — automatically finds and crops black bars baked into the video itself. Works even on protected players with manual Measure.
▸ Ambient light — a WebGL glow that extends the video's colors past the edges of the frame. Like Ambilight, right in your browser.
▸ Enhance quality — real-time adaptive sharpening that scales with resolution.
▸ Voice control — adjust the video hands-free, just by speaking.
▸ Cloud sync — your settings follow you across browsers and devices.
▸ Mode manager — hide the modes you never use for faster switching.

Trusted by 100,000+ users across Chrome and Firefox stores.

Works on any screen size and any aspect ratio. If it doesn't work somewhere, join our official Discord channel and we'll fix it.

Install UltraWideo and reclaim your whole screen.