Rated 3 out of 5 stars

The 'Add Overlay' doesn't appear in version 1.10 of Firebug. You'll need to roll back to version 1.9.2 to get it working again in this case. Otherwise a pretty useful tool, I have found overlay issues when it comes to working with jquery UI dialog boxes as well as the Pixel Perfect panel not resizing along with the Firebug panel. It would be great if we could get controls to be added to the page overlay rather than having it only tucked into the Pixel Perfect panel

This review is for a previous version of the add-on (1.7.1.1-signed).