@gemlog I think it's mostly targeted at web developers as the only distinct feature is that it knows what a web page is — it can capture more than you see on your screen, suitable for making screenshots of long threads like this one here: https://social.librem.one/@m0xee/110661667821062373
The only other way to do it is to print the page to PDF, convert to JPEG and crop it. Maybe there are extensions which do it better — I don't know, but why when there is a built-in one 🤷
@gemlog It's not always perfect, especially on "infinite scrolling" websites, but in most cases I use it for it gets the job done. It also snaps to the edges of the element you are about to capture the same way AdBlock picker does — it highlights the element when you hover over it, comes in handy sometimes. In case you want to try it out, it's Ctrl+Shift+S, but maybe you have to enable something in about:config to enable advanced features — I don't remember, if that's the case, I did it long ago