PNG Gauntlet is a .NET freeware program that optimises the size of PNG image files. Actually it’s a front end for the PNGOUT command line program, but the end result is the same – your images get made smaller. Oh and most importantly, it does this impressive feat without losing image quality. If you have a lot of images and file size and disk space is important to you, then you’ll probably want to take a look at this.
PNGGauntlet is a .NET program that uses Ken Silverman’s PNGOUT to optimize PNG files. Many PNG files output by popular graphics software packages like Photoshop or even Fireworks are not as small as they could be – PNGGauntlet squeezes the last bit of size out of them. Furthermore, no information is lost during this process – the only thing that changes is the file size. Just select the files you want to optimize (or drag them onto the window), select where you want them to go, and click the button. PNGauntlet can also be used to convert JPG, GIF, TGA, PCX, and BMP files to PNG.