Speedifier - Control video speed in the web

Speedifier - Control video speed in the web

By Arno Appenzeller

  • Category: Utilities
  • Release Date: 2017-05-04
  • Current Version: 1.0.2
  • Adult Rating: 4+
  • File Size: 4.53 MB
  • Developer: Arno Appenzeller
  • Compatibility: Requires iOS 10.11 or later.
Home > Utilities > Speedifier - Control video speed in the web


Speedifier is a native Safari 10 extension that lets you control the playback speed of every HTML5 video in Safari. So you can watch your favourite videos in double speed or half the speed. If you have an HTML5 video playing on any website just press right and select the Speedifier option you want to slow down or speed up the playback speed of the video. On some popular pages Speedifier even adds a dedicated button to the video player to control the playback speed Speedifier adds a button to those pages: * Netflix * Vimeo * CNN * WSJ * Prime Video * Twitch * Wistia * VideoJS * ZDF * ARD NOTE: If a video requires an external plugin like Silverlight or Flash it is not supported by Speedifier



  • Not working well on new netflix player

    By SpcFilho
    Every since the netflix updated their player's inteface Speedifier is not working because the Netflix website doesn't allow right click on the player page. Please fix this or allow to change the playback speed through keyboard (without right clicking).