Femmage by eliaspourquoi

Works in any tabs, you can copy from a tab and paste in another tab, or in an other software, anywhere.

Ctrl/Cmd+D: Switch modes (Hidden, Clip and Paste)
Ctrl/Cmd+V (Paste mode): Paste any image into the screen and use the mouse to drag it over.
Ctrl/Cmd+C (Clip mode): Copy any clip you did using the mouse in clip mode.
Mouse-Left (Clip mode): Draw an area you want to select for copy.
Mouse-Left (Paste mode): Drag any image you paste from your clipboard.

Name Inspiration: https://fr.wikipedia.org/wiki/Femmage