YouTube High Definition Version History

136 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 50.0 136.3 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 49.3 157.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 49.2 157.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 49.1 157.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 49.0 157.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 48.3 157.8 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 48.2 157.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 48.1 157.6 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 48.0 154.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 47.1 154.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 47.0 154.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 46.0 154.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Version 45.1 146.3 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

High Resolution Support

Version 45.0 138.6 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Toolbar Abbreviation Support

Version 44.2 138.5 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 44.1 138.5 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Firefox 44 Support

Version 43.10 138.5 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Rolling Back Update Support

Version 43.2 138.5 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 43.0 138.5 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Skin Support

Version 42.6 138.9 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 42.2 136.0 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Channel Support

Version 42.1 135.5 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Cookie Bug Fix

Version 41.2 135.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Backward Compatibility Support

Version 41.0 135.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Auto Play Support

Version 40.1 133.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

FlashBlock Support

Version 40.0 133.3 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 39.0 132.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Localization Support

Version 38.6 132.7 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Backward Compatibility Support

Version 38.5 132.4 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

Support for Recent YouTube Changes

Version 38.4 128.2 KiB Works with Firefox 3.0 and later, SeaMonkey 2.0 and later

4K Video Support