It is a really helpful extension. it has many features but I use it especially to "Pin the video player when scrolling down the page", "Automatically remove annotations" and "Automatically pause videos opened in background tabs". It has many more features too but I do not need them.

I've been using this great add-on for a while now and it works well. I wish it had option to get rid of that horrible miniplayer

How do I initialize the setup toolbar?

It has been a handy little tool when I want to expand the volume for speakers who are not loud enough and I like to speed up the video when needed. I need to explore this add-on more, but so far it has been great. Thanks and keep making it better.

Addon with amazing features except youtube keeps crashing

What an absolutely fantastic extension. The key things I use this for are to block ads, stop autoplaying the next video and set the default playback speed to 1.5.

Love this addon, can't use YT without it! Would love to see an option to sync audio as on some videos the audio can be out of sync due to uploader error and it really bugs me! Other than that this is a MUST extension if you ever touch youtube.

Absolutely fantastic, I love this add-on! The only thing I'd like more from it is the option to disable scrolling down the page while fullscreen, otherwise this is perfect.