downloading high quality audio is free.
as for video, up to 720p is free, but if you want to download 1080p, then you will have to be subscribed to their paid plan.

Great Extension. When we use any websites for downloading video or audio, they are harmful for our computer, but this one ensures security and high quality downloading.

It works like a charm!

Работает, спасибо!

Thank you very much! This is the best I used)

Very easy to use, so much betterthan others I've tried before

Another tool in my grab-bag of YouTube video downloading tools. This add-on works well on a lot of videos. Sometimes the MP3 feature does not work, and sometimes certain video qualities are not able to download, but what I have discovered with YouTube is there is no free tool that downloads everything perfectly. That's why I have multiple different add-ons. This one is a great tool in the bag. Pro-tip: You can always convert a video you've downloaded into an MP3 easily with several different free programs that you can find online.

good job.