brew install imagemagick
convert input.png \( +clone -background black -shadow 60x5+0+4 \) +swap -background white -layers merge +repage output.png
convert input.png \( +clone -background black -shadow 60x5+5+5 \) +swap -background white -layers merge +repage output.png
(file name "shadow")
convert $1 \( +clone -background black -shadow 60x5+0+4 \) \
+swap -background white -layers merge +repage shadow-$1
shadow input.png
shadow-input.png
✨ 🎆 This is awesome @ThomasCassady :D Thanks for getting this working. 🚢