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 is available to install from Firefox Browser Add-ons and for download from this page. It has 167,999 active users The latest version is 118.0.9, and it was published 4 months ago.

Install from Firefox Browser Add-ons
View source code
Total download count: 3 (Only count downloads from Firefox-Stats)

All available versions

You can find the current and older versions of YouTube High Definition here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions
 4 versions available for download.

Install XPI file

  1. Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  2. In Firefox browser, go to about:addons to open Add-ons Manager
  3. Click on , then select Install Add-on From File
  4. Select the YouTube High Definition ZIP file from step 1. YouTube High Definition is now installed on your browser.