For me it works better in Windows 10 than in 7. The problem is more on my end with variables like using an outdated browser, background processes using resources or traffic on a VPN that interrupts the download or conversion process on my Win 7 machine. If I switch to another browser that uses the extension to start a failed download over again it wants to start where I left off in the first browser, that happens to me in Win 7 if it weren't for that I'd give it 5 stars.
Update: It quit working. It went through the process of (step one) downloading but quit there and didn't go through the conversion process and give me the finished file. The only thing showing downloaded was an empty mp4 file.

Nothing to add. Efficient and simple.

Easiest YouTube down loader I have ever used

Very nice extension

It doosent work no longer....
It is just today's rating.
tody, this add-on, don't start or only make 0byte file.

I could surely download a few files around November of last year,but....

The day of December 31 .
I tried to download a game's video.... but I couldn't.

'whaaaat !? '


That was revelation....

God was telling me to stop playing games and celebrate the New Year with my friends.
(but unfortunatery I had no friends..)

But today, I still can't download! whaa?
hey hey, God...please..
（andI have no friends now too.XD）

May be youtube have changed the something,affter this add-on's last update.

Another site and add-on almost doesn't work too.
(Every site didn't work on Dec31)

May be after the next update, We will be able to download again. .... I hope.

良かった（しっかりダウンロードできる）。今のところダウンロード制限がない（使ってからまだ1日くらいしかたってないけど笑）。ただダウンロードすると謎の表示が出る（英語で）。それだけが欠点。

Works a charm

Good

proste super

Best Extension to Download videos on Firefox (Chrome does not allow), so you can view them multiple times without consuming your data pack, Great !

Excelente complemento, fácil de usar. Lo recomiendo con confianza.

Very good. Only complaint is that the Download Speed is a bit too slow. If it Downloaded Files Faster, this would be a 5 STAR ADD-ON easily.