Ultrawidify
Aspect ratio fixer for Youtube. Allows improperly encoded videos to properly fit ultrawide and superwide displays (e.g. 21:9) — and it attempts to do so automatically.
Ultrawidify: Aspect Ratio Fixer for Firefox
Ultrawidify is a Firefox add-on that greatly improves video viewing on ultra and super-wide displays. Capable of auto-detecting and fixing aspect ratios for a smoother viewing experience, it supports a wide range of video platforms from Youtube to Twitch, Vimeo to Streamable, and more. In cases where auto-detection isn't possible due to site restrictions, this handy tool provides manual adjustment options. Further features include video alignment, player detection override and stretch video capabilities for improved versatility.
Add-on stats
Manifest V2
By: Tamius Han
Rating: 4.15 
1 new ratings
(115)
Weekly download count: 258
Firefox on Android: No
Permissions:
- storage
- activeTab
- <all_urls>
Size: 3.05M
URLs: Website
Full description: See detailed description
Ranking
Other platforms
Not available on Android
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Effectively stretches videos to fill the screen without cropping, especially on platforms like YouTube and Twitch
- Offers various aspect ratio options including unique choices like 18:9
- Fixes black bar issues for many users, making the viewing experience more enjoyable
- Once configured correctly, it generally works well for most video platforms
Cons
- Has performance issues, causing lag or browser freezing after extended use
- Requires frequent adjustment of settings for some streaming services, which can be frustrating
- Older versions were reportedly more stable, and some users miss them
- Inconsistent cropping of black bars, not achieving full effectiveness compared to other solutions
Most mentioned
- Video lag and browser performance issues after prolonged use
- The need for manual adjustments in various settings for different platforms
- The effectiveness of the add-on in addressing black bar issues
- Users expressing frustration over inconsistent functionality across different video sources
User reviews
by Firefox user 18869949, 2025-03-07
by 远离中共邪教快退出党团队, 2025-02-15
by Firefox user 18825558, 2025-02-10
Add-on safety
Risk impact
Ultrawidify requires a few sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Ultrawidify. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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