PNG is an image format which has been supported
since 1997 by browsers from Netscape and Microsoft. It is a standard
supported by the
World Wide Web Consortium.
A lossless format like GIF, but it compresses the picture better and
supports full color imagery (up to 48 bits per pixel!).
The picture below is an RP-133 conformant SMPTE (Society of Motion Picture and Television Engineers) video test pattern. If you click on it, you will be brought to a small gallery of great PNG images.
For (many of) those looking for a free way to look at PNG images now,
I discovered a really nice freeware utility called IrfanView.
It is available from
It is a Microsoft Windows application which supports a wide variety of graphic
formats. Conversion between the formats is easy, and it has a large selection of
image filters and other effects.
Accesses since 1998-08-15
Last updated 2010-11-21
Color Space Overview|
Interactive Color Wheel
PNG 16 Overview
PNG 16 Technical