No longer works. Can no longer find links. When it did work the pulldown menu didnt offer 480p or other than 360p or 720p resolutions.
Tried on a clean browser install as well.

this extension tries to pull a shitty trick. they don't tell you that they make you download a separate program to download anything! they didn't put that info in the description! makes me think they're hiding that fact for nefarious reasons, like not just because their extension isn't as good as others (because they need an additional program to do what other programmers have put into the extension by it's self). it makes me think that the program i would have needed to download is possibly a virus, malware, spyware, or a trojan... some shady biz! I'm just trying to download the audio from some videos! it does not take anything overly complicated to do that- so that just a red flag for me...

Внедряет рекламу на страницу интернет магазинов!

С VK не скачивает.

i installed this like a moron--and cannot locate it anywhere to uninstall. does not show up in firefox extensions, does not show up in installed programs list. please tell me how to fix this. it is slowing everything down.

No easy uninstall, persistent reinstall, and I believe there is other dubious behind-the-scenes activity. Do not install!

С Ютуба не скачивает. Обновил до крайней версии, перезапустил браузер (FF 63.0.3) - не помогло.

Doesn't work vk

Doesn't work!!!!!

Asks for all kinds of permissions wholesale. I may want to give it access to my download list, but NOT allow it to send me push-notifications. No, thanks.

для нормального скачивания с ютуба - требует установить Ummy YouTube Downloader

If you want to download anyting in 720 or 1080p it requires you to download some other program to your PC. It should have be written in the major description, I don't like this kind of clickbait.