Tried a lot of these addons over the years, this is the best. Currently works really well at the time of review.

It adds a really obvious download button right alongside youtubes interactions buttons.

Supports downloading in a variety of formats, including ripping the audio out of the video file - very useful for me who was after old BBC Radio 4 transmissions that have been pulled by BBC, even though i've paid a license fee for 35 years!

Downloads really fast. Hope it will last. Provided it continues working for a month or so, i'll donate as it is well deserved.

Quick and easy, no problems at all. Great

Дополнение не является полностью бесплатным. Бесплатный доступ фактически представляет собой пробную версию примерно на 51 скачивание, после чего для продолжения требуется PRO. При этом ограничение количества скачиваний заранее явно не указано в верхней части описания дополнения.
-----
The extension is not completely free. The free access is essentially a trial limited to about 51 downloads, after which you need to upgrade to PRO to continue using it. However, this download limit is not clearly disclosed at the top of the extension’s description.

Fantastic

Wonderful Program! Works exactly as it should. Thank You for making it.

This is extremely great add-on, it helped me a lot to learn to edit by recreating the YouTube videos created by others. I would love to thank the creators, and I am also assuring you that, I will donate some of my earning, to help the creators and also keep the add-on free, once again thank you very much for this wonderful extension!