Script for extracting optimised images from an ipa file using Xcode utility PNGCRUSH.

gistfile1.txt

Running this script requires that you rename the exptension of ipa to zip and then move images in payload folder to a common folder in which this ExtractedImages.sh exists. Run this script it should find all the images and extract it in RevertedImages folder.


#!/bin/bash

#create a folder to put reverted images in
mkdir RevertedImages

#looping for png files in . or $1 parameter
for png in `find . -name '*.png'`
do
  name=`basename $png`
  #echo $name

  #pngcrush path with -revert-iphone-optimizations parameter
  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/
     pngcrush -revert-iphone-optimizations $name RevertedImages/$name

done