1 OptiPNG is a PNG optimizer that recompresses the image files to a smaller
2 size, without losing any information. The idea has been inspired from
3 pngcrush, and is explained in detail in the PNG-Tech article: "A Guide
5 <http://www.cs.toronto.edu/~cosmin/pngtech/optipng.html>. The
6 implementation is carried forward in OptiPNG, which offers a faster
7 execution per trial, and a wider search space.