UltraWideo – Remove Black Bars & Fit Any Video to Your Screen
Extension Actions
- Extension status: Featured
- Extension status: In-App Purchases
Remove black bars and fit any video to your screen. Works on Netflix, YouTube, Prime, Disney+, HBO and all video sites.
Remove black bars from any video. Fit any video to your entire screen on any video platform — automatically.
UltraWideo is the cross-browser extension that manipulates video aspect ratio to fill your screen. Whether you own an ultrawide monitor (21:9, 32:9), a standard 16:9 display watching 4:3 videos, or anything in between — UltraWideo eliminates black bars and gives you a true full-screen experience.
Why UltraWideo over other extensions?
Unlike alternatives that break on certain platforms or stop detecting videos, UltraWideo is proven to work on all major video streaming platforms, including embedded videos across the web. No "video not detected" errors. No broken layouts on non-video pages. It only activates when there's a video to work with.
▸ Works everywhere — any streaming service, any site with embedded video, any platform. Not limited to a single site.
▸ Blazingly fast — written in plain JavaScript with a tiny footprint. No memory leaks, no background processes draining your battery, no performance degradation over time.
▸ Minimal interface — a thoughtful popup that doesn't get in your way. No intrusive overlays, no UI that pops up over your video. Just clean controls when you need them.
▸ Multiple modes — Upscale to fill your screen, Stretch to fit, or scale manually. One mode active at a time for a simple experience.
▸ Adjustable scale — fine-tune the zoom level to get exactly the crop you want, simultaneously with the active mode.
▸ Magic touch — toggle between modes using pinch gestures on trackpads and touch screens, or mouse wheel + CTRL key. No other extension offers this.
▸ Keyboard shortcuts — fully customizable through your browser's built-in shortcut manager, so they never conflict with other extensions or websites.
▸ Dark & light mode — automatically matches your system appearance, or set it manually.
▸ Cross-browser — available for Chrome, Firefox, Edge, and all Chromium and Gecko-based browsers.
▸ 40+ languages — AI-translated for global accessibility.
Pro Features
Support UltraWideo's development and unlock bonus features:
▸ Magnetic Helper — make UltraWideo work outside of fullscreen by attaching it to any video player you select. Perfect for windowed viewing.
▸ Accent Color — personalize the interface with 8 carefully selected color themes.
▸ Disabled Mode — hide modes you don't use for faster switching.
▸ Consents — control which notifications you receive.
▸ Ambient Light — adds an immersive ambient glow around your video, enhancing the viewing experience and helping protect OLED screens from uneven burn-in.
Trusted by 75,000+ users across Chrome and Firefox.
Works on any screen size and any aspect ratio. If it doesn't work somewhere, open a ticket on GitHub and it will be fixed.
Latest reviews
- Fengge Lin
- There're only 3 modes normal / stretch / zoom-in. so not so useful
- y4ssine nobody
- great
- bLuGhOsT
- Does not work with Prime Video
- Mark Tania
- This is the only extension I’ve found that actually works across different platforms reliably.
- T. Tuubi
- PERFECTION. Where other extensions have failed on some websites video players... This one works everywhere!! Its also designed beautifully with shortcut keybinds to use it quickly.
- Raghav Sood
- I love your app! can you please add this extension to safari as well for apple users!!!!!
- Piotr Z
- Tried getting premium, got charged but nothing was unlocked. Dev did not respond when asked for assistance.
- Vasilis Balabanidis
- works!
- Kingston Sherrill
- it works good for the first time but after u turn off ur pc or computer or laptop it dosent work anymore even if u unistall it
- Lukas Donner
- Literally only one that functions properly as advertised.
- Gunner Fred
- it works great. Simple to use
- Lau Jun Xiang
- Top!!!!!
- Fredrick Tom
- Easily one of the best cross-browser extensions I’ve used. Works the same in Chrome and Firefox
- Paddling With Abir
- Not works in Microsoft Surface Laptop 3
- Emily Emma
- The fact that it's tested on multiple browsers and OSes shows. I'm on Windows/Chrome and my partner is on Mac/Firefox, and it works perfectly for both of us. The GitHub presence and detailed description gave me confidence to install it.
- Calaba Merry
- My favorite new extension. Makes video viewing feel so much better.
- Talha Sheikh
- not working
- Joshua White
- Absolutely love this extension! It makes video playback look amazing on my ultra-wide screen without those annoying black bars. Works across all my favorite streaming platforms!
- ace mori
- I am writing to review the recurrence of a persistent issue regarding video playback on ultrawide monitors. When I watch a video (this usually happens on YouTube, but isn't exclusive to that site), the standard black sidebars are being replaced with these glossy, colored bars that dynamically match the dominant colors of the video content. I have dealt with this problem before. The last time I aired out my discontent on this issue, I was informed in an update that it would be fixed, but the problem has unfortunately returned. I am at the point where I am tired of this artifact, and as a pro subscriber, I must insist that this issue be permanently resolved in an upcoming fix or update. If this problem is successfully fixed, I will be happy to update my view rating accordingly.
- Suresh Nair
- I'm very satisfied
- Mendes Van
- Great extension.
- Ruy Manuel Mendes
- Full Wild with Disney+ = non more subtitle :(
- Richard Gray
- Tiny extension with a massive impact on my viewing experience. Super impressed
- Daniel Jessica
- Everything works as promised. Minimal interface, fast performance, and customizable shortcuts. My only request is adding more languages for international users
- Tatiana Irina
- Honestly surprised at how smooth and lightweight this is. It's like the video was meant to be full screen.
- Tan Li Ying
- I love how this extension works flawlessly across all video streaming platforms!
- Zach Felix
- I can use my whole screen. Huge thanks!
- Robert Richard
- Would be nice if the extension remembered the last used mode per site.
- Moore John
- Good Job!
- Rice Williams
- works so well
- Plab Type
- Tried 3 other extensions before this none came close.
- Maximum Jay
- It’s rare to find an extension this well thought out. Nothing is overdone, and everything serves a purpose.
- Sarah Johnson
- The toggle gesture with CTRL + mouse wheel is pure magic—feels intuitive.
- Boko Tall
- Honestly impressed by this tool
- Grand Duke
- Good!
- Bbe Naa
- Performance is excellent
- Angle Till
- The pinch-to-zoom feature on my trackpad is genius.
- Create Max
- This solves a surprisingly annoying problem in a very elegant way. The keyboard shortcuts are intuitive and customizable, which helps me a lot as I use many extensions.
- Rain Raw
- Makes YouTube look cinema-like.
- Best Ore
- As a video editor, I'm constantly viewing content in non-standard formats, and this extension makes previewing content on my ultrawide much more bearable.
- Leo Ji
- I was skeptical, but this actually works better than some desktop apps I’ve tried.
- Mona Ali
- The scaling slider is a nice touch subtle control over video size without needing to dig into advanced settings
- Silver Josh
- Doesn’t mess with the native video player UI. Huge plus.
- Grace Mark
- I appreciate the granular control over notifications. Not all devs let you silence changelogs.
- Lio Tyl
- Took me a few minutes to figure out, but once I did wow, it’s perfect.
- Marcelo Ori
- This solves a surprisingly annoying problem in a very elegant way. The keyboard shortcuts are intuitive and customizable, which helps me a lot as I use many extensions.
- Alice Casey
- As someone who watches a lot of videos for work, this saves me time and eye strain.
- Hassan Jam
- Noticed the ambient light feature recently. It’s subtle but makes a difference. brilliant tools
- John Samuel
- Works great across Chrome and Firefox. No issues switching between browsers.
- Blessed Joshua
- Honestly impressed by how fast it works. Zero lag when toggling aspect ratios.