Rated 4 out of 5 stars

Good tool: Takes screenshot of entire page, let's you select all or an area and saves it as png or jpg - or copies the entire screenshot to clipboard.
Suggestions for further improvement:
- copy only the selected area to clipboard
- add a print button for printing of selection
- allow adjustment of selection by pulling the selection borders like a graphics rectangle object.

This review is for a previous version of the add-on (1.1.7).