What is it?
NodePastr is a simple tool. It allows you to easily copy and paste node groups between Blender files.
How do I use it?
Simply press Ctrl+Shift+C to copy the selected node group, then press Ctrl+Shift+V in the file where you want to paste it.
What can I copy/paste?
As of right now, you can copy/paste shader node groups and geometry node groups.