2025 (6 years after my previous review)
I've given the add-on 5* stars because it's been great since I started using it about a decade ago. The developers do their best to make corrections to the code when YouTube & other websites make changes to there download codes. As a token of my appreciation I will be making another donation in the next couple months. A big "Thank You" to the developers for creating this wonderful Add-on and for keeping it updated.

My previous review (given, 6 years ago)
I would have given it 4.5 *stars instead of 4 stars if I could have. I am using Windows XP Pro w/ FF ver 52.7.3 and have been able to download about 90-95% of YouTube vids and maybe 80-85% of vids from other websites. Some download problems I would think come about because of my dated O/S & FF version. All-in-all I do a lot of research & this has been my main download app the past few years. I made a donation a few years ago ($25 or $35) and I am going to make another after I finish writing this review ... A big thanks to the developers!

very good

Does only run with QR code download. No free Addon anymore. No update for 8 month, would call it a money machine, now.

it.is a Excellent program !

vk.com on not working mp3 download.

ce module est excellent, je m'en sert tres régulièrement et je le trouve tres pratique et facile a manipuler.

Excellent program !!!

Absolutely perfect have been using this for like 3 months no problems. Godspeed to the makes of this amazing add on.

Top, j'aime beaucoup ce module

Been using it for years. Excellent for all types of video.

Excellent Add-On. I have used it for quite a while with no incidents. It downloads effortlessly and is easy to use.

Best ever extension to download videos from any site, i have used it with youtube, vimeo, and many more.

Great add-on, had this for many years. Works as it is supposed to. my only concern is that sometimes it directs you to download its companion app, which is unwanted (if i wanted to use an external app, i wouldn't install an add-on) and it states it is bcz of some technical issues, a claim I don't know is true or false. But overall can't expect more from a free add-on. I am extremely happy with it, still the best out there

does exactly what it's suppose to do

Does exactly what it says in the description. Downloads videos in a snap. also allows you to choose the format you would like the video in. No adds+ dont have to use any other software++ free+++. this add on is the reason i use firefox. there are plenty of good browsers out there now. i used to use firefox exclusively a while back and then swapped over to others for a bit here and there. this add on made me come back. i do intend on making a donation for this add on in the future. Oh yeah another reason i like this is that i have not been haunted by pop ups asking me to buy donate or register. this add does what most standalone apps people pay for and does it better.

Ha ido perdiendo funcionalidad hasta quedar a expensas de instalar más software para hacer lo que se supone que debe hacer sin más.
Otro de esas extensiones que han pasado a vivir del nombre; no la recomiendo en absoluto.

superb