Recursive JPG/PNG Optimisation

ImageOptim.sh

#!/usr/bin/env bash

# Recursive image optimisation. Simply call imageoptim.sh <filename> 
# Example bash imageoptim.sh /assets
# Requires jpegoptim and optipng (installable on mac using brew)

echo "---------------------------------------"
echo "------- PNG/JPEG File Optimiser -------"
echo "---------------------------------------"

optimise() {
	echo "$1 Optimization started... Trawling through all subfolders"
	find . -iname "*.$1" -print0 | while read -d $'\0' file;
	do
		if [ "$1" == "png" ]
		then
			echo "Hitting PNG Files"
			optipng -o7 -preserve "$file"
		elif [ "$1" == "jpg" ]
		then
			echo "Hitting JPG Files"
			jpegoptim --max=90 --strip-all --preserve --totals --all-progressive --force "$file"
		fi
	done

	echo "$1 Optimization completed..."	
}

cd $1
optimise "jpg"
optimise "png"
cd -

echo "---------------------------------------"
echo "------- Optimisation complete!! -------"
echo "---------------------------------------"