I have used this add-on with Firefox Developer Edition for more than two years and it has not disappointed me because it works as expected.
In addition its easy to use and provides options of choosing from different download file sizes.
I really find it useful and will continue to use it.

it's amazing

tku

Eccellente!

SImplemente excelente, la mejor herramienta para descargar videos y música.

The Youtube Downloader is very well done. I've used it for years.
Because Youtube constantly makes code changes, the developer is always having to update the downloader, so sometimes it doesn't work, but only temporarily. Be patient, and he'll get it fixed. That's a Youtube issue, not his.

This is by far the best *free* add-on for downloading YouTube videos. Unlike others out there that try to put limits or force you to pay for features, this one man operations which relies on generous donations, gives you everything including the full 1080p video stream! It's also one of the fastest to adapt to new changes to YouTube's website restoring functionality quickly when a previous method no longer works. Consider supporting this developer if you value a free open internet.

I don't think there is anything I would change about the Down Loader. As a professional musician, it has been an asset to my business.

Good add-on. Easy to use. Excellent and quick support from developer in case of issues/questions. I can recommend using it, (and donating) for continued development.

perfect

Simple the best video downloader. Period.