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very easy download best addon

nice

目前唯一有效下載YouTube原始串流影片的附加元件，且能抓到所有畫質供選擇，而非常見的下載轉檔垃圾。

I am using Firefox Quantum 59.0.2 with windows 8.1. After installing the other supporting apps, I have used this program many times with out fail. Great app works like it is supposed to.

es una ayuda extraordinaria, Nikolas

I was using this extension from more than 7 years. It's really fantastic.

Funktioniert tadellos, besser als alles andere, zuverlässig und schnell,... topeinfach, einfach top! ...

Muy buena...

Good

Works really well with Youtube. :)

It properly enlists what is on the Youtube website. The best part is to download the Audio-only file which was one of the features of Flashgot, but not working in Quantum.
Thank you

That is the best

使いやすい、わかりやすい、動作も機敏、すばらしい。

Easy use, easy understand and Quickly, so good.

It works well on all videos I've tried and with ease! Also, I love the media converter and muxer.