image optimization script (pngcrush & jpegtran)

optimize.sh

#!/bin/sh

# script for optimizing images in a directory (recursive)
# pngcrush & jpegtran settings from:
# http://developer.yahoo.com/performance/rules.html#opt_images

# pngcrush
for png in `find $1 -name "*.png"`;
do
    echo "crushing $png ..."  
    pngcrush -rem alla -reduce -brute "$png" temp.png
    mv -f temp.png $png
done;

# jpegtran
for jpg in `find $1 -name "*.jpg"`;
do 
    echo "crushing $jpg ..."  
    jpegtran -copy none -optimize -perfect "$jpg" temp.jpg
    mv -f temp.jpg $jpg
done;