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FlashToHTML5 is a Safari extension that replaces the standard YouTube Flash Player with an HTML5 player. It will also automatically load the video at the highest quality available, without advertisements!

Some videos on YouTube are not available in a format that can be played by the HTML5 player, so if that's the case, FlashToHTML5 will automatically switch back to the standard YouTube Flash Player.

What's New

Version 3.2:

  • Fixed an issue causing some YouTube videos to not load in HTML5.
  • Fixed a rare audio playback issue.


  • OS X 10.5.8 or later
  • Safari 5.0 or later

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Current Version (3.x)


Downloads 71,093
Version Downloads 6,839
License Free
Date 22 Mar 2014
Platform Intel 64 / OS X / PPC 32 / Intel 32 / PPC 64
Price Free