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.
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Add-on stats

Users: 5,706
-109
Rating: 4.13
(111)
Version: 5.1.7 (Last updated: 2024-01-28)
Creation date: 2016-10-16
Weekly download count: 240
Firefox on Android: No
Risk impact: Moderate risk impact
Risk likelihood:
Low risk likelihood
Manifest version: 2
Permissions:
  • storage
  • activeTab
  • <all_urls>
Size: 3.05M
URLs: Website

Ranking

# 1,058 ▲ 2
Other rankings
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Other platforms

Ultrawidify (v6.0.0.1)
3.53 (276) 60,000
Not available on Android
Ultrawidify (v5.1.7)
3.40 (55) 26,091
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Add-on summary

Analyze keywords

Need to remove unnecessary black bars from this youtube video you're watching? Ultrawidify is here for you. It should work on Youtube, Netflix, Twitch, Vimeo, Streamable (and on embedded videos that are hosted on these sites). It may work elsewhere as well, but no guarantees.

Important note: This addon is only tested and intended to work with Google Chrome specifically. If you're using a different browser, you're on your own. No, Edge is not Google Chrome (and neither is any other chromium-based browser).

FEATURES

1. AUTOMATIC ASPECT RATIO DETECTION Ensures that video will be cropped without you having to lift a finger. It even re-adjusts crop if aspect ratio changes mid-video. Autodetection is not 100% accurate and has some limitations, but it's accurate enough for most cases.

Autodetection is not supported on all sites. Some sites (e.g. Netflix, Disney+, Hulu) use DRM in order to prevent video piracy, and such protection measures interfere with automatic aspect ratio detection.

2. MANUAL ASPECT RATIO CORRECTION

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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 eliminate black bars, especially for YouTube and Twitch.
  • Provides options for various aspect ratios, including 16:9 and 21:9.
  • Useful for users with ultrawide monitors, enhancing the viewing experience.
  • Resolves black bar issues for streaming content.
  • Overall, a must-have for 21:9 fans.
Cons
  • Experiences lag and performance issues on certain videos.
  • Unresponsive tab issues after prolonged use.
  • Requires frequent readjustments, particularly for different streaming services.
  • Some users reported it becoming unusable after updates.
  • Compatibility issues leading to problems with side cropping.
Most mentioned
  • Laggy performance over time.
  • Issues with videos getting stuck on sides or corners.
  • Frequent need for settings readjustment.
  • Black bars not cropping properly for some aspect ratios.
  • Overall effectiveness diminished in recent versions.
User reviews
Worked great until recently. After watching videos for a while (not using fullscreen) the whole window turns grey and the audio keeps playing but the tab becomes completely unresponsive and can only be fixed by closing the browser
by vandim, 2024-11-23
Works perfectly, using it to stretch youtube videos to 16:9 in fullscreen (no cropping), because some videos have black bars on the left and right sides when in fullscreen, but Ultrawidify fixes that automatically, all you have to do is go into settings and select 16:9 stretch hybrid.
by Tiger II, 2024-11-09
Lags out on some videos, making them unable to be normally watched.
by wando, 2024-09-06
View all user reviews

Add-on safety

Risk impact

Ultrawidify requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

Ultrawidify has earned a fairly good reputation and likely can be trusted.

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