This extension is simple yet useful, or it was until the last update. By default, it went to loader.to to download. So if you want it to work the way it did, just go to the extension settings and set the mp3 option to:
https://loader.to/?link={url}&f=1&s=1&e=1&r=coconvert
and the mp4 option to:
https://loader.to/?link={url}&f=7&s=1&e=1&r=coconvert
This format is simple: the part f=1 tells it what kind of file to download. So you can experiment with different numbers to give different default downloads for audio and video, or simply choose an option once you're directed to the download site. I have chosen f=1 which is mp3 audio files and f=7 which is 1080p mp4 video files. If you want bigger than 1080p, you can use f=8 for mp4 1440p, f=9 for 4k (4k and above uses webm files instead of mp4 to save space it look like) and f=10 for 8k.
I also know that s=1&e=1 control the default playlist downloading, so changing that will change how it downloads playlists.

fue el unico que me sirvio

There are so many extension that are hacks..this one works...it does take you to another page..but immediately does conversion in the page without other BS redirects. Once done..you can download it off the page.

Works, it automatically brings you to a third party website and begins the download coconvert.com. Not exactly what I want but it does work, many others here do a similar thing but this one automatically starts the download at least while other applications are just shortcuts. Less messy than similarly functioning plugins.

If it didn't redirect and just showed up in the download folder then you'd be perfect.

Nice Danke

Es muy util y facil de manejar

Nearly like DownThemAll but only for youtube

Super great to have this with us

Good Add-on :)

the only one extention with ogg support!

bueno

A reliable and speedy little audio conversion application which does what it says. With a neat, simple, and easy to use interface, there's nothing much that I can get wrong. It cacks on Simple Youtube Downloader which was about as reliable as a blind unicycling postman (traveling uphill during the Festival of the Hurled Banana Skin). I migrated from that frustrating mess to youtube downloader plus and won't be wasting my time with anything else again now!

Thanks to the dev