great add-on and works where many fails.

Amazing

very versatile

功能非常强大，惊喜，赞！

de lo mejor

Отличное расширение! Спасибо большое!

great add on, outstanding job! Highly recommended. This add on works where many others I have tried won't work.

very good，very easy/convenient to use。

Atende perfeitamente para eu guardar meus vídeos preferidos do curso de harmônica.

video downloadhelper give me a comfortable enjoyment of surf intenet.

Its really handy

Thank you so much for creating this add on app.. :-) It is very useful to me..