Portable Network Graphics Specification
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Portable Network Graphics Specification
Portable Network Graphics (PNG) Specification (Second Edition): Information technology- computer graphics and image processing - Portable Network Graphics (PNG); Functional specification ISO/IEC 15948:2003 (E)
ISO/IEC 15948:2003 (E)
This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.
WC3 Recommendation
1996
November 10, 2003
Second Edition
March 07, 2018
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