pngquant is a command-line utility and a library for lossy compression of PNG images. The conversion reduces file sizes significantly (often as much as 70%) and preserves full alpha transparency.
With this repository, we offer examples running pngquant as a native process from C#, Unity and Adobe AIR.
This repository comes with two command lines script:
pngquant-windows.cmda batch file for Windows OS executing
pngquant-osxa shell script for Mac OS X executing
To start pngquant process, you've to execute the correct command line script (corresponding to your OS) and give as argument the path to the folder where the current pngs will be compressed and overwrote. Have a look on the examples.
Don't forget to ship pngquant and the command lines script with your application:
- with Adobe AIR, put them in the Package Contents.
- with Unity, add them inside the StreamingAssets folder.
Warning: Unity API Compatibility Level must be .NET 2.0 without Subset, otherwise Process events won't work in final build!