png Portable Network Graphics is a bitmapped image format and video codec that employs lossless data compression. PNG was created to improve upon and replace GIF (Graphics Interchange Format) as an image-file format not requiring a patent license. The PNG acronym is optionally recursive, unofficially standing for PNG's Not GIF. (Excerpt from Wikipedia article: PNG) 15 32 0.9 http://www.ariadne.ac.uk/sites/all/datacharts/hc/1238-chart-wp.html