This is a very simple, yet powerful and useful app. It allows you to increase the speed of a video and audio file on YouTube by a few seconds at a time. You don't have to create an account to use it; it works on the browser, too. The only thing you have to do is install the extension. It will work on the website, too, if you have a YouTube account. There is no need to create an account; you don't have to enter your username and password.

The speed of the video and audio file increases by a few seconds at a time. There is no change to the music, the sound, or the video quality. If the video is too fast, it will increase the speed of the audio as well. You can also change the rate of the speed increase from 0.25 to any other number.