Summary: A PNG optimizer and converter

Description:
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; TIFF support is coming up) to optimized PNG, and performs PNG
integrity checks and corrections.

URL: http://optipng.sourceforge.net/
License: zlib

Maintainer: danf