Bookmarklet to control Youtube Playback Speed

Install

1. Press Ctrl +Shift + B on your keyboard to open the bookmarks bar.
2. Drag the following button to your bookmarks bar.
YT-Rate

Use

1. Play any Youtube Video.
2. Click the bookmarklet.
3. Use the [ and ] keys to change the speed.
4. press and hold the : and ; keys to fast forward.