1. I was looking for something like this. I see it's newly developed extension and I wish I had a way to contact the developer directly. There's issue: at first I thought the extension wasn't working at all, but yes it's working partially. When i use my keyboard to change focus to firefox (alt+tab) and right after I try copying the link with this extension (alt+ins on windows), the link doesn't get copied. I thought it was something about window focus and events so after alt+tab, i tried to click on the active window with the mouse and yup! surely if I do that before alt+ins the extension fires up and copies the link into clipboard. Hoping my review will let the developer to fix it. Thanks!! (I'm on windows 10, latest 96.0.2 (64-bit) firefox as of this review)
2. I highly recommend for anyone using this extension to also use clearurls addon to clean up urls from all the tracking stuff before saving. (it would be awesome if this extension did it, although maybe it's not its job anyway)
EDIT: I'm giving this extension 5 stars now. The issue I'm describing exists, bus it's caused by issue in firefox. Very usable extension if you're aware of the workaround. Hope we get fix from firefox later. Thanks again!