If you are using Alfred, consider installing this workflow, cmd + shift + alt + v, shortcut key press, clipboard The picture in it will become a file and put it on your desktop.
If you're using Alfred, I highly recommend installing the "paste image to file" workflow available at https://github.com/barretlee/alf.... With just a simple press of the "cmd + shift + alt + v" shortcut key, any image in your clipboard will be instantly turned into a file and saved onto your desktop. Give it a try and see how much easier it makes your workflow!
Alfred workflow - Paste image to file
The Action Tracker - Life Planner