YouTube High Definition

Name: YouTube High Definition
Rating: 3.792 (1346 reviews)
Author: Baris Derin

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.

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YouTube High Definition is a versatile Chrome extension designed to improve your YouTube viewing experience by automatically playing videos in your chosen highest resolution, whether it's 4k, 1080p, or any preferred setting. It allows users to customize video player size, set preferred volume levels, and gain control over auto-muting and auto-stopping videos.

This extension also supports HD playback for YouTube videos embedded on external sites like Facebook, Twitter, and Reddit, ensuring you enjoy the best sound and picture quality wherever you watch. With easy-to-use features and enhanced media controls, YouTube High Definition provides a seamless and improved way to watch videos with optimal quality and convenience.

Video Productivity Entertainment

By:

Baris Derin

Daily users:

155,862+ 144

Rating:

3.79

(1,346) 3 new ratings

Version:

118.0.9 Last updated: 2024-09-02

Version code:

5800440

Creation date:

2011-07-15

Risk:

Permissions:

storage

Host permissions:

<all_urls>

Size:

216.79K

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Updated:

a day ago

Ranking

# 115 ▼ 2

Other rankings

#4 in Other extensions

#5 in Games & Entertainment

#6 in Photos, Music & Videos

#1 in defi keyword 33

#1 in define keyword 3

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Other platforms

YouTube High Definition (v118.1.4)

10,000+ 3.78

(161)

User reviews

The add-on was appreciated for its stable video playback and ability to set video quality without freezing, preferred by users over more complex extensions. However, multiple users report that after recent YouTube updates, especially changes to the setPlaybackQuality API, the extension no longer functions properly on Firefox, with issues such as autoplay disabling failure and video playback problems. Users desire continued updates and additions like sound boosting, but currently the add-on's limited features and incompatibility reduce its usefulness.

Pros

Provides a stable playback experience without freezing or randomly stopping videos.
Allows setting playback quality which is a primary desired feature for many users.
Simple and focused functionality compared to other extensions with many features.
Works well on some devices and scenarios before recent YouTube updates.

Cons

No longer works due to YouTube API changes, particularly setPlaybackQuality no longer supported.
Fails to function properly on Firefox after YouTube updates, including on restart.
Does not disable autoplay as expected in some cases.
Lack of updates to keep compatibility with YouTube changes.
Limited feature set compared to other extensions which offer more enhancements.

Recent reviews

by Firefox user 16053483, 2025-05-20

by kik, 2025-05-20

by Firefox user 19000776, 2025-05-19

View all user reviews ›

Extension safety

Risk impact

YouTube High Definition requires some sensitive permissions that could impact your browser and data security. 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

YouTube High Definition has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
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