The only reason for not using this superb add-on would be not knowing about it. OK, now you know!
And the only reason to criticize it is most likely lacking elementary computer skills. If you read this short review and trust it, you probably not among those.

It easy to use once you get familiar with its UI, has few issues and gets updated regularly as far as I noticed. It supports many sites, way more than described. Be advised, for best results, especially when you need to convert video/audio formats, use a support application, referred to as "Companion App", which can be downloaded separately.

This being said, it is by far one of the best add-ons I ever used, both on Firefox and on Chrome (or derived from it). I like it a lot and would recommend it as a must for all those willing to enjoy the streamed content off-line.

El mejor complemento, una vez que aprendes lo detalles de como usarlo en ciertas paginas,

This app is Amazing!... Best video downloader I've used without spending an arm and a leg.

gutes addon

我经常使用它下载小视频

目前用過最好用的火狐影音下載套件，直覺又方便

使用感很好，支持，要是能够做到bilibili下载就更完美了

Очень выручает в обучении. Спасибо!

Top App , leicht zu bedienen , bin sehr Zufrieden

Really useful for HLS Streaming

I've been using Video DownloadHelper off and on over the years on various laptops and it's never disappointed. It's easy to use and self-explanatory. Love it. Would recommend it to anyone.

Отлично скачивает даже со сложных сайтов. Быстро и аккуратно в отдельную папочку.

Программа очень выручила!

O melhor de todos! Indico de olhos fechados

很不错 很方便

非常好用的网页视频下载工具，支持！！！！！！

A great downloader would highly recommend it to anyone. Very user friendly.

There are very few videos this cannot catch. Sometimes, you have to catch video and audio separately then recombine them in Micro$oft Photo. Great product