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 -iname "*.png"`; do
    echo "crushing $png ..."
    pngcrush -rem alla -reduce -brute "$png" temp.png

    # preserve original on error
    if [ $? = 0 ]; then
        mv -f temp.png $png
    else
        rm temp.png
    fi
done

# jpegtran
for jpg in `find $1 -iname "*.jpg"`; do
    echo "crushing $jpg ..."
    jpegtran -copy none -optimize -perfect "$jpg" > temp.jpg

    # preserve original on error
    if [ $? = 0 ]; then
        mv -f temp.jpg $jpg
    else
        rm temp.jpg
    fi
done

Muchas gracias! Vamos a probar!!

nice one! thanks!

Excellent. thank you!

How can we use these functions for our website, that is hosted on Linux with PHP coding using my Sql.

Add this to the top to make it work with files that have spaces in them.

IFS=$'\n'