slackbuilds_ponce/graphics/optipng
..
optipng.info
optipng.SlackBuild
README
slack-desc

optipng (Advanced PNG Optimizer)

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.

See also: graphics/pngcrush