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*Details: File format summary



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Name Portable Network Graphics
Version 1.0
Other names PNG (1.0)
Identifiers PUID:  fmt/11
MIME:  image/png
Apple Uniform Type Identifier:  public.png
Classification Image (Raster)
Description Portable Network Graphics (PNG) was designed for the lossless, portable, 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. PNG is designed to work in online viewing applications, so it is fully streamable. It can store gamma and chromaticity. PNG also detects file corruption.
Orientation Binary
Byte order Big-endian (Motorola)
Related file formats Has lower priority than Portable Network Graphics (1.1)
Has lower priority than Portable Network Graphics (1.2)
Has lower priority than Animated Portable Network Graphics  
Is previous version of Portable Network Graphics (1.1)
Technical Environment  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source The National Archives and Records Administration / The National Archives and Records Administration
Source date 11 Mar 2005
Source description Specifications link:
Last updated 11 Jun 2012
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