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Last modified: Monday, August 12, 2002 

Short for Portable Network Graphics, and pronounced ping, a new bit-mapped graphics format similar to GIF. In fact, PNG was approved as a standard by the World Wide Web consortium to replace GIF because GIF uses a patented data compression algorithm called LZW. In contrast, PNG is completely patent- and license-free. The most recent versions of Netscape Navigator and Microsoft Internet Explorer now support PNG.

Also see JPG vs. GIF vs. PNG in the Did You Know . . . ? section of Webopedia.

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For pages about PNG . Also check out the following links!

Related Links

Developer's area for PNG tools
Collection of PNG implementation tools and specifications. It is maintained by Group 42, Inc., a contributor to the PNG effort.

PNG home page
The PNG home page offers a set of reference pages for locating code and information related to the PNG image format.

PNG specification
This is Version 1.0 of the WWW Consortium's PNG specification. It contains the definition of the file format and recommendations for encoder and decoder behavior.

RFC 2083
Request for Comments document for the Portable Network Graphics (PNG) specification.

W3C's PNG page
WWW Consortium's (W3C) resource page for PNG. It contains the latest specification, news and information on the PNG format.

W3C's PNG specification
This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of raster images.

Yahoo!'s PNG page
Yahoo!'s directory of PNG.

related categories

Graphics Standards


World Wide Web

related terms

bit-mapped graphics



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