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

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.

Technologies de l'information — Infographie et traitement d'images — Graphiques de réseau portables (PNG): Spécification fonctionnelle

General Information

Status

Published

Publication Date

02-Mar-2004

ICS

35.140 - Computer graphics

Technical Committee

ISO/IEC JTC 1/SC 24 - Computer graphics, image processing and environmental data representation

Drafting Committee

ISO/IEC JTC 1/SC 24/WG 6 - Computer Graphics and Virtual Reality

Current Stage

9093 - International Standard confirmed

Completion Date

05-Aug-2021

Ref Project

Relations

Consolidated By

ISO 28927-9:2009 - Hand-held portable power tools — Test methods for evaluation of vibration emission — Part 9: Scaling hammers and needle scalers

Effective Date

06-Jun-2022

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ISO/IEC 15948:2004 - Information technology -- Computer graphics and image processing -- Portable Network Graphics (PNG): Functional specification

Standard

ISO/IEC 15948:2004 - Information technology -- Computer graphics and image processing -- Portable Network Graphics (PNG): Functional specification

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ISO/IEC 15948:2004 - Informati...

INTERNATIONAL ISO/IEC
STANDARD 15948
First edition
2004-03-01

Information technology — Computer
graphics and image processing —
Portable Network Graphics (PNG):
Functional specification
Technologies de l'information — Infographie et traitement d'images —
Graphiques de réseau portables (PNG): Spécification fonctionnelle

Reference number
ISO/IEC 15948:2004(E)
©
ISO/IEC 2004

---------------------- Page: 1 ----------------------
ISO/IEC 15948:2004(E)

This CD-ROM contains the publication ISO/IEC 15948:2004 in HyperText Markup Language (HTML).

© ISO/IEC 2004
All rights reserved. Unless otherwise specified, no part of this CD-ROM may be reproduced, stored in a retrieval system or transmitted in
any form or by any means without prior permission from ISO. Requests for permission to reproduce this product should be addressed to
ISO copyright office • Case postale 56 • CH-1211 Geneva 20 • Switzerland
Internet copyright@iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
Published in Switzerland

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