Very nice addon.
But, please add .........
1) highlight text or zone possibility.
2) Draw possibility.

This would be perfect for the use I have ... Edit a page, then save it as a pdf with Print-edit PDF addon (and saving it to computer as a pdf).
This way, your addon would become essential for lots of people wishing to save an edited web page and a nice companion to lots of "save as pdf" addons.

Have a nice day