Pim. The FreeImage Project. Clever PNG Optimization Techniques « Smashing Magazine. Advertisement As a web designer you might be already familiar with the PNG image format which offers a full-featured transparency.
It’s a lossless, robust, very good replacement of the elder GIF image format. As a Photoshop (or any other image editor) user you might think that there is not that many options for PNG optimization, especially for truecolor PNG’s (PNG-24 in Photoshop), which doesn’t have any. ImageOptim - a PNG/JPEG graphics optimizer for Mac OS X.