Greasy Fork is available in English.
This script adds a download button, a faster way to download audio from YouTube and with guaranteed quality. This site is very simple, fast and effective to download! Best of all!
Hmm Okay. I'm fixing this, thanks. :)
Doesn't adapt to dark YouTube theme
The button doesn't adapt to YouTube's dark theme but seems to work regardless. With the dark theme, the center of the button is transparent, but the top and bottom are the intended color of blue.