YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
YouTube High Definition - Enhance Your YouTube Experience
'YouTube High Definition' is a highly efficient Firefox add-on that automatically plays all YouTube videos in the highest possible resolution. The users have the choice to specify their preferred resolution. Other features include control over the video player size, video volume, auto-mute, and auto-stop functionalities. It also works seamlessly when videos are embedded onto external sites.
Add-on stats
Weekly download count: 1,700
Firefox on Android: Yes
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 3
Permissions:
- storage
Host permissions:
- <all_urls>
Size: 216.79K
URLs: Website
Ranking
# 113 ▲ 2
Other platforms
Not available on Android
Not available on Edge
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Add-on summary
YouTube High Definition solves a number of annoying YouTube issues.
Features
Automatically play all YouTube videos in the highest resolution possible
Specify your preferred resolution (4k, 1440p,1080p, 720p, 480p, 360p, 240p, 144p)
Change video player size
Control auto-mute volume and auto-stop video play
Supports HD play when videos are embedded in external sites like Facebook, Twitter, Reddit, and others
Set a preferred volume level for all videos
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spammy, or outdated.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
Cons
- Doesn't change videos to high resolution.
- Not working on various platforms (mobile Firefox Nightly, Android).
- Settings do not apply correctly (resolution and autoplay).
- Glitches occur that require page refresh.
Most mentioned
- The add-on does not work as intended.
- Users report that videos do not load in high definition despite settings.
- Problems persist across different versions and platforms.
User reviews
by Ugarov, 2025-01-25
did not actually work. videos still loaded at normal size and 360p despite my settings saying theater mode and 1080p
by Firefox user 18623356, 2025-01-23
by Firefox user 18793191, 2025-01-21
Add-on safety
Risk impact
YouTube High Definition requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
YouTube High Definition has earned a fairly good reputation and likely can be trusted.
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