Slightly customized version of ClipGrab (http://clipgrab.org/)
See README for build instructions if you are building yourself.
Unless you want to hack on the code, I would recommend downloading the pre-built AppImage file.
You'll need to make the AppImage executable, then you can run it:
cd ~/Downloads
chmod +x ClipGrab-3.9.6-x86_64.AppImage
./ClipGrab-3.9.6-x86_64.AppImage