Optimizing PNG Bitmap Files

PNG is the preferred bitmap graphics format for developing Android applications. If your application is using PNG bitmaps intensively, it is a good idea to try to reduce the size of the PNG resource files using various optimization techniques and tools. I did some googling and after a quick search I found the following tools:

• AdvanceCOMP: Linux, OSX, Windos
• ImageOptim: OSX. Uses a number of optimization libraries such as OptiPNG
• OptiPNG: Windows, Linux, OSX
• PNGCrush: Windows, Linux
• PNGOptimizer: Windows

More information about PNG optimization can be found, for instance, from PNG-Tech website. Feel free to hint me if you know any good tools not listed above.