This is an extension for YouTube. It allows you to disable autoplay for videos that you watch on your YouTube page. It's a simple way to make sure that you don't have to worry about videos automatically playing in the background.

If you don't want to worry about autoplay, this is the best way to make sure that your videos don't play automatically. It will prevent the video from playing when you switch to another tab, or when you click the video to make it play. It will play the video in the same way that it does when you're watching it in the foreground.