http://halicery.com/2Image Decoders/PNG/home.html

PNG

The first PNG image under investigation

About

PNG is well-documented and patent-free (http://www.libpng.org).

It lossless compresses true-color, grayscale and palette-based images of 1,2,4,8 and 16 bit depths of packed pixel formats.

Compression is based on encoding differences from neighbour pixel data (filters) and using the DEFLATE algorithm.


Sun Nov 22 15:08:46 UTC+0100 2015 © A. Tarpai