Included in Debian stable: http://packages.debian.org/optipng
Jari sdesc: "Advanced PNG (Portable Network Graphics) optimizer" ldesc: "A PNG optimizer that recompresses the image files to a smaller size. It losslessly reduces the bit depth, the color type and the color palette of the image, runs a suite of compression methods and strategies, and selects the compression parameters that yield the smallest output file. It also recognizes several external file formats like BMP, GIF, TIFF and PNM (PBM, PGM, PPM)." category: Utils requires: cygwin libpng12 zlib a) manual mkdir optipng cd optipng wget \ http://cygwin.cante.net/optipng/optipng-0.5.5-1-src.tar.bz2 \ http://cygwin.cante.net/optipng/optipng-0.5.5-1.tar.bz2 \ http://cygwin.cante.net/optipng/setup.hint tar -xf optipng-0.5.5-1-src.tar.bz2 ./optipng*.sh --color all b) automated gpg --keyserver pool.sks-keyservers.net --recv-keys 955A92D8 mkdir optipng ; cd optipng rm -f get.sh get.sh.sig wget http://cygwin.cante.net/optipng/get.sh \ http://cygwin.cante.net/optipng/get.sh.sig && gpg --verify get.sh.sig get.sh && sh get.sh -- Welcome to FOSS revolution: we fix and modify until it shines