Package optipng

PNG optimizer and converter

http://optipng.sourceforge.net/

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.

Version: 0.7.8

General Commands
optipng	Optimize Portable Network Graphics files