This tool comes directly from the productivity department:

Modeler plugin wich stores a bitmap of the current selected UV map into clipboard. Very usefull if you have to texture a massive amount of UV maps or to quickly update a modified map in the graphic program of your choice.

Version 2 of the plugin allows you to edit the image size for the output. Also I added a Layout version, where you can export the uv's of all selected items.

The layout version has not been tested that much, so there might be some issues with it

 If you find this plugin usefull you might consider a donation