YouTube High Definition Version History

123 versions

Be careful with old versions!

These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.

Version 44.1 141.8 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Firefox 44 Support

Version 43.10 141.8 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Rolling Back Update Support

Version 43.2 141.8 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 43.0 141.8 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Skin Support

Version 42.6 142.2 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 42.2 139.3 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Channel Support

Version 42.1 138.8 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Cookie Bug Fix

Version 41.2 138.7 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Backward Compatibility Support

Version 41.0 138.6 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Auto Play Support

Version 40.1 136.6 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

FlashBlock Support

Version 40.0 136.5 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 39.0 135.9 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 38.6 135.9 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Backward Compatibility Support

Version 38.5 135.6 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 38.4 131.2 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

4K Video Support

Version 38.3.1-signed 131.2 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Critical Bug Fix

Version 38.2.1-signed 131.1 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Critical Bug Fix

Version 37.1.1-signed 123.5 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 37.0.1-signed 123.5 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 36.1.1-signed 123.3 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 36.0.1-signed 123.3 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 35.7.1-signed 120.7 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Options Support

Version 35.5.1-signed 117.4 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 35.4.1-signed 117.4 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Tiny Video Size Support

Version 35.3.1-signed 117.1 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Firefox Electrolysis Support

Version 35.2.1-signed 114.3 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Full Page Video Support

Version 35.1.1-signed 114.3 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 35.0.1-signed 114.2 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

FlashBlock Support

Version 34.3.1-signed 113.7 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

SeaMonkey Support

Version 34.2.1-signed 105.2 kB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

HD Support for HTML5