Rated 4 out of 5 stars

Very good. Liked it straight away even though I had to hunt around for the toolbar icon which is automatically added to the Navigation bar, which I have hidden.

One point that I don't like: you can't single click an icon to save what you have setup in the options - i.e. the visible region or the whole page. There IS a shortcut to do that, but I like to keep away from the keyboard.

Apart from that, it is really useful and will make it a lot easier to explain stuff to people by annotating a screen capture.

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