可以是可以，但是可不可以把声音关了

This is great, all firefox devs have not been able to fix its own capture tool, never captures whole page, and you did it single handed with an addon.

really great!

Very nice addon, but some improvements can still be made. Like having a fill color for the rectangle/elipse with option for opacity as well. This makes it easier to mark or mask/hide certain things in a screenshot.

gd