I need an Extension with following characteristics:
1) make a Screenshot ( not Full Screen only predefined X and Y Point, that i can set ) in good Quality
2) convert to base64 in good Quality
3) open a new Tab or Window, call an predefined URL ( must set by me ) with the base64 image as parameter.
4) do that all with with a Shortcode ( i.e. STRG + > )
no saving of file, nothing more to do.