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https://github.com/madcoda/pnguncrush

Batch convert PNG files from iOS apps to normal PNG
https://github.com/madcoda/pnguncrush

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Batch convert PNG files from iOS apps to normal PNG

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pnguncrush
==========

convert PNG files from iOS apps to normal PNG

I'm not a iOS developer, but I once need to extract some images from an exisiting iPhone App, this is a
little shell scipt that helps me.

## Usage

git clone https://github.com/madcoda/pnguncrush.git

# move the tool to where you want
cd ./pnguncrush
mv ./convert /path/to/your/pngs/

# make sure it's executable
cd /path/to/your/pngs/
chmod +x ./convert

# convert all the pngs in the folder
./convert *.png

Now you can find the converted PNGs in the "converted" folder

## Requirements
- Install XCode from App Store

## How do I get this command
A lot of QAs on the internet points me to use a tools in /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush
which I don't have on my Mac. In this Apple's Q&A it uses a tools "xcrun" which works for me. The command is found in
https://developer.apple.com/library/ios/qa/qa1681/_index.html. This script is only the "loop" version of it for ease of use.