Resize and optimize images

resize_images.sh

#!/bin/bash

for image in $( ls *.{jpg,jpeg} ); do

  # Get the width and height
  height=`sips --getProperty pixelHeight $image | sed -E "s/.*pixelHeight: ([0-9]+)/\1/g" | tail -1`
  width=`sips --getProperty pixelWidth $image | sed -E "s/.*pixelWidth: ([0-9]+)/\1/g" | tail -1`

  if [[ $height -gt 600 || $width -gt 800 ]]; then
    echo "large file ($image) needs reducing"
    # This does the actual resizing
    sips -Z 800x600 $image
  fi

done

# To optimize run
# jpegoptim *.{jpg,jpeg}