Inspired by this.
- Take script from below and put it in
C:\Users\<your name>\AppData\Roaming\GIMP\<version you're using>\scripts
. - Open cmd and
cd
to where your image is. - Run this command:
"C:\Users\<your name>\AppData\Local\Programs\GIMP 2\bin\gimp-console-<version>.exe" -b "(report-drop-shadow \"<name of infile>\" \"<name of outfile>\" 0 0 30 60 TRUE)" -b "(gimp-quit 0)"
Adjust settings to your liking.