It works. Every time Youtube breaks it, the developer updates very rapidly. I paid for this one - it was worth it.

A great little downloader! I've been using it for a long time. The only times I've ever had any "problems with it" have been the result of YT having made code changes ~ probably to try to thwart those of us who archive informative videos which we like; but, which a lot of the folks associated with YT would prefer to "flush down the 1984'ish memory hole..." The developer of this add-on does a really good job of building updates to address these code changes as quickly as possible. My ONLY regret about using this add-on is that, as a disabled senior, I'm too destitute to be able to repay him for all his hard work in any other way than to recommend him to others...

This addon works GREAT! I have had NO problems saving videos that I wanted to view at a later date, or use for references.
Thank You!

Eccellente app, veramente una delle migliori estensioni di Firefox se non la migliore

does the job it claims to do

Es una excelente extensión! ... Funciona y Descarga perfectamente el video, además permite seleccionar entre varios niveles de definición , incluso Full HD.
Completamente recomendado.

a very useful extension; works fine to save videos from the browser.

works perfect , thanks for giving me oportunity to save favorit music videos, go on and good bless you , again and again

best addon, work like a charm. no need for paid software like idm and wait for video to play. just open the video hit download , done.
So many choices

This downloader is just super. Like it very much.. :-)

This is so cool, and I have saved countless videos and audio files with it. I don't know how anybody could review it badly, it's a super low cost, effective, multi-format youtube downloader, does just what it's supposed to. I feel like I should tithe this guy monthly for as useful as it's been to me.

Every so often the app gets messed up by Youtube changes. I am always amazed and grateful how often it gets repaired. IF YOU HAVE PROBLEMS, WAIT! Give him time. It always gets fixed. It is wonderful utility.