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ISO/IEC 15948:2004

Information technology — Computer graphics and image processing — Portable Network Graphics (PNG): Functional specification

Standard Details

ISO/IEC 15948:2004 specifies a datastream and an associated file format, Portable Network Graphics (PNG, pronounced "ping"), for a lossless, portable, compressed individual computer graphics image transmitted across the Internet. Indexed-colour, greyscale, and truecolour images are supported, with optional transparency. Sample depths range from 1 to 16 bits. PNG is fully streamable with a progressive display option. It is robust, providing both full file integrity checking and simple detection of common transmission errors. PNG can store gamma and chromaticity data as well as a full ICC colour profile for accurate colour matching on heterogenous platforms. ISO/IEC 15948:2004 defines the Internet Media type "image/png". The datastream and associated file format have value outside of the main design goal.

General Information

Status : Published
Standard Type: Main
Document No: ISO/IEC 15948:2004
Document Year: 2004
Edition: 1
  • Section Volume:
  • ISO/IEC JTC 1/SC 24. Computer graphics, image processing and environmental data representation

Life Cycle

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ISO/IEC 15948:2004
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