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

> published ISO standard

**Wikidata**: [Q27229683](https://www.wikidata.org/wiki/Q27229683)  
**Source**: https://4ort.xyz/entity/iso-iec-15948-2004-information-technology-computer-graphics-and-image-processing-portable-network-graphics-png-functional-specification