Не дополнение, а навязыватель стороннего ПО. пока не становите ничего не получите.

Now demands payment if you don't want a watermark on Youtube videos and many other ADP-based video sites.

works very well on Linux, frequently updated. Hasn't failed me yet.

Works fine for me. You need to get accustomed but nothing overly complex or incomprehensible. There is room for improvements but, hello, it's free and gets the job well done.

Very user friendly! Does the job quick!!

The perfect extension for downloading videos on the web.

Perfectly fine

nécessite l'installation d'un logiciel tiers accédant à vos répertoires : non sécurisé + met un gros tag QR code sur la vidéo + chargement / conversion long ... ne mérite pas un "recommandé" de la part de firefox. Easy Youtube Video Download Express est meilleur pour moi (mais avec limitation à 720p et ne récupère que les qualités avec les liens dispo dans la page, parfois le flux youtube donne plus). Le bon point : c'est gratuit.
needs another freeware installation that can acces to your directories (not secured) + add a big QR code tag in your video + takes too long for download / converting ... it should not get an award from Firefox. Easy Youtube Video Download Express is better for me (but with limitation of 720p and with quality available in links in the web page ... sometimes youtube provides more as a video flux). The good thing : no cost.

hope I can donate with Alipay or wechat. Other payment methods are not convenient in China

tres utile pour telecharger des video sur nimporte quel site web, je recommande

Works Great on Linux Mint!

ücretsiz olsa çok iyi olur

非常好用，终于能下载中国大学mooc里的视频了

ein perfektes Hilfsmittel zum Downloaden von Filmen in den verschiedensten Formaten.

非常实用，谢谢开发者

Ce module ne fonctionne plus pour télécharger des émission . Dommage

The purpose of downloader addon is to avoid external executable. Not sure why this addon is so popular but there are other extension that works better than this