If you deal with PNG files, you need this app.
PNG is a great format. It's lossless, patent-free, open, and supported by all sorts of stuff. It's great for screenshots, line drawings, and anything that needs to look good. Unfortunately, many programs which save to PNG format do a horrible job of it. Adobe Photoshop is one of the worst offenders, creating PNG files many times the size they should be. So we created Ping. To use it, simply drop a PNG file on it. Ping will then optimize the file, often reducing its size to a mere fraction of the original.
Ping works by optimizing a variety of aspects of the PNG format (palette, compression parameters, IDAT chunks, etc.) but it does not remove any image information from the file. Since PNG is a lossless format, it certainly wouldn't make sense to throw away information.
Unlike similar utilities, Ping is a Universal Binary. Not only that, but we've optimized OptiPNG (the technology that powers Ping) for the latest Intel chips -- taking advantage of all the cool (at least to us geeks) features that are at the heart of Apple's latest and greatest computers.