The PNG File

The Portable Network Graphics (PNG) file was a new graphics file format developed by a team led by Thomas Boutell in mid-late 1996. It was originally meant to replace the Graphics Interchange Format (GIF). It can store data with lossless data compression and it supports transparency. High resolution images can be stored in fairly small amounts of space.
An example of a Portable Network Graphics file, which is an image of a PNG file.