I am very impressed with the developer and the add-on. I purchased this add-on only to discover that it wasn't working. I contacted the developer about it, who responded very quickly to say that the add-on was in the process of being updated. Within a day, it was working and I tested it out by downloading both a video as well as just an mp3. Both options worked great!

I am very happy with the add-on and, again, I am impressed with the great communication and responsiveness of the developer.

Useless

MP3 download only with Pro Version

As of 10/08/2024 it's still able to download videos 2 or 3 videos, however any subsequent download attempt(s) and you'll get either a "generating download link" in which case nothing happens, or downloads will simply fail. So it is working but only partly so...
As for these 5-star reviews that have nothing to say - speak up!

Working perfectly under Firefox 131.0 (Linux Mint).

Today it doesn't work anymore and I am surprised to read that I will have to pay 30 $ if I want to get the new app.

A Fuir !
Ne fonctionne pas alors que j'ai payé 10$ pour avoir un accès aux 720p et autres. Communication impossible avec l’éditeur qui est conscient du problème mais ne veux rien faire a part proposer de dépenser 30$ de plus pour "peut être" pouvoir enfin télécharger. inadmissible

nice

not free, only works with subscription. Misleading information

Doesn't allow 1080P downloading without Pro

TL;DR 0/5 star. They make you pay for mp3s conversion. Website says FREE.
Website tells you "
Quickly download and also covert videos, audios from YouTube to mp3 with our free YouTube video downloader plus converter add-on tool", "This software is free of cost with no download and conversion limit.", "Take advantage of this FREE online YouTube to MP3 converter for easier and quicker downloads". So it's free to download and free to convert.... but I have to pay pro? Scammers