Extension Features

Highly capable and easy to use. Featuring intuitive interface and a few highly performant, but powerful features.

Blazingly fast

The internal logic that manipulates the video is written in plain JavaScript, has a tiny footprint and is blazingly fast.

Limitless platforms

Not limited to any specific video streaming platform. Aims to work everywhere, including embeddable videos.

Minimal interface

Thoughtful design that doesn't get in your way, but provides you with all the necessary options to get the experience you deserve.

Adaptive appearance

Automatically applies the appearance that you have set as personal system preference. If your system is in light or dark mode, the extension will be too.

Cross-browser

Single source of truth, available for all major browsers and tested on Chrome & Firefox. It works in all Chromium based browsers as well.

Magic touch

Toggle between modes with built-in pinch inwards/outwards functionality. It is working on touch screens, trackpads with multi-touch gesture support and also with a mouse-wheel in combination of holding CTRL key on your keyboard.

Internationalization

Supports handful of languages, but aiming to support all major languages with the help of the community.

Keyboard shortcuts

Customizable within the browser built-in interface, rather than extension's interface, to avoid conflicts with other extensions.

Most Recent Reviews

Don't just take my word for it, read what others have to say about UltraWideo.

Chrome Web Store

Best extension of its kind, I've using it for years now and the devs keeps impressing me with those upgrades, keep the good work.

– Dream Maker
Firefox Add-ons

The only one that worked ootb with my 4:3 screen.

– spayder26
Chrome Web Store

I'm a big nerd; I've enjoyed using this w/ my CRT monitor to watch old DOS games on YT playing at their proper native resolution - combined with custom resolutions from CRU and the Intel Graphics Control Panel on my old laptop.

– Mike Lindquist
Firefox Add-ons

Really nice extension.. Works like a magic for new Firefox android

– Sheikh Azharuddin
Chrome Web Store

Brilliant, does exactly what it says it'll do and provides a nice UI and shorcut buttons to enable. UPDATE: Can I give you a 6th star since this also works for Xbox Cloud Gaming?!

– Neil Stirton
Chrome Web Store

Very convenient, you won't even know it's there while all the magic is happening behind the scenes

– Sachin Malik
Chrome Web Store

Essential to have with a 21/9 screen, works very well on Youtube, Netflix, etc...

– Fabian Bustori
Chrome Web Store

Must have extension for removing black bars on a browser!

– Bryant Echeverria
Firefox Add-ons

One of those extensions that you forget you even have installed, because it really should just be how things work. Then you go to another browser and enter Letterbox Hell™️ before remembering how dang useful it is.

– Potts
Chrome Web Store

finally my search is over, proper ultrawidescreen on all videos however I choose

– Riaz Ali
Chrome Web Store

This is currently the only extension that really works, in all situations, on any website. All others I've tried have issues.

– Manuel Rochon
Firefox Add-ons

Best extension for video full screen view in mobile

– pM
Chrome Web Store

Straight to the purpose, stretch your videos to hide annoying black bars, immediate 5 STARS

– Darith Chan
Chrome Web Store

Good new update, new branding, probably new code underlying the extension. Works as expected!

– Cedi
Firefox Add-ons

Works as expected and solves the annoying fact that Dinsey+ doesn't support ultrawide monitors.

– Jorge
Chrome Web Store

Works perfectly for both ultrawide monitors --- AND 4:3 CRTs!!!

– Tom Leamon

Frequently Asked Questions

Covering the most common questions and concerns about UltraWideo.