Download of optipng-0.6.1.tar.gz (optipng-0.6.1.tar.gz ( external link: SF.net): 1,043,851 octetos) will begin shortly. If not so, click link on the left.
OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.