PNG image optimizer for Java. Pngtastic reduces the filesize of PNG images without sacrificing image quality. It runs on the command line or via the included ant task. Pngtastic makes integrating PNG image optimization into your Java build process easy.

Command line usage:
1. Optimize a single file. Overwrite the original file with the optimized one.
java -cp pngtastic-0.4.0.jar com.googlecode.pngtastic.Pngtastic softsea.com.png

2. Optimize multiple files. Save the optimized versions to the /optimized directory as "filename.optimized.png".
java -cp pngtastic-x.x.x.jar com.googlecode.pngtastic.Pngtastic --toDir optimized --fileSuffix .optimized.png image1.png image2.png

The license of this software is Free, you can free download and free use this image optimizer software.