Look no further than this screenshot tool right here for Best Of Show in Firefox. The only problem is, there are no keyboard shortcuts to take the snapshots! I have to deduct one star for that since it' such an important feature.

Still not one click but at least gives some options even though full page is what I want 99% of the time. I wish I could have it save to my desktop instead of my downloads folder (and no I don't want to change my download folder for everything) I really wish this worked more like Pearl Crescent Page Saver where in one click it can save a screenshot to my desktop without having to wait for the page to scroll but its not compatible with Multiprocess so I guess this will have to do for now.

Very promising. Works quickly, and has a simple and effective design. Needs improvements with handling pages with elements that do not move as you scroll.

Capturing visual part works. Capturing a Portion doesn't (does nothing) and capturing the entire page doesn't work ether (does nothing). I'm using FF 54.