YouTube High Definition

Name: YouTube High Definition
Rating: 3.7657 (1387 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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Features & Capabilities

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.

User Growth & Download Statistics

Add-on Entertainment

By:

Daily users:

Rating:

Version:

118.0.9 Last updated: 2024-09-02

Version code:

5800440

Creation date:

2011-07-15

Risk:

Permissions:

storage

Host permissions:

<all_urls>

Content scripts matches:

*.youtube.com
*.youtube-nocookie.com

Size:

211.71KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 112 ▲ 1

Other rankings

#3 in Other extensions

#5 in Games & Entertainment

#7 in Photos, Music & Videos

#1 in defi keyword 35

#1 in define keyword 10

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Other platforms

YouTube High Definition (v118.1.4)

10,000 3.77

(164)

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Baris Derin

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/youtube-high-definition/

Website:

https://barisderin.com

Permission Change History

2023-09-21: Version 109.0.0 → 118.0.5

Add Host permissions: <all_urls>

Remove Permissions: tabs cookies webRequest webRequestBlocking <all_urls>

User Reviews

Many users report the extension frequently stops working and no longer changes video quality. When it works, it helps set a preferred resolution and provides a theater mode not offered by YouTube. However, theater mode and quality controls are often unreliable, and enabling the extension can cause buffering or playback issues. Some users also find the settings difficult to access or reset with new videos. Overall, the add-on offers useful features but reliability has been inconsistent across reviews.

Pros

Allows setting a preferred video resolution/quality on YouTube (a feature YouTube/Google doesn't expose).
Includes a theater mode (theatre mode) option for viewing videos.
Offers a feature Google reportedly refused to implement.

Cons

Frequently stops working and no longer changes video quality.
Quality controls are unreliable and often don't apply as configured.
The theater mode can be unreliable, sometimes reverting to normal mode.
Enabling the extension can cause buffering or playback issues.
Settings can't be opened easily or reset when loading new videos/playlists.

Recent reviews

Just doesn't work. Not on shorts or full videos, quality still rubbish and defaulting to auto or low despite decent internet and using this extension with all permissions allowed.

by *****, 2026-06-12

by af*****, 2026-06-09

Doesn't do anything, YouTube keeps picking quality by itself

by fa*****, 2026-06-02

View all user reviews ›

Is YouTube High Definition Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

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

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

YouTube High Definition has earned a good reputation and 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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