jpayne@68: .TH PNG 5 "February 23, 2024"
jpayne@68: .SH NAME
jpayne@68: png \- Portable Network Graphics (PNG) format
jpayne@68: 
jpayne@68: .SH DESCRIPTION
jpayne@68: PNG (Portable Network Graphics) is an extensible file format for the
jpayne@68: lossless, portable, well-compressed storage of raster images.  PNG
jpayne@68: provides a patent-free replacement for GIF, and can also replace many
jpayne@68: common uses of TIFF. Indexed-color, grayscale, and truecolor images are
jpayne@68: supported, plus an optional alpha channel.  Sample depths range from
jpayne@68: 1 to 16 bits.
jpayne@68: .br
jpayne@68: PNG is designed to work well in online viewing applications, such
jpayne@68: as the World Wide Web, so it is fully streamable with a progressive
jpayne@68: display option.  PNG is robust, providing both full file integrity
jpayne@68: checking and fast, simple detection of common transmission errors.
jpayne@68: Also, PNG can store gamma and chromaticity data for improved color
jpayne@68: matching on heterogeneous platforms.
jpayne@68: 
jpayne@68: .SH "SEE ALSO"
jpayne@68: .BR "libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
jpayne@68: .LP
jpayne@68: PNG Specification (Second Edition), November 2003:
jpayne@68: .IP
jpayne@68: .br
jpayne@68: https://www.w3.org/TR/2003/REC-PNG-20031110/
jpayne@68: .LP
jpayne@68: PNG 1.2 Specification, July 1999:
jpayne@68: .IP
jpayne@68: .br
jpayne@68: https://png-mng.sourceforge.io/pub/png/spec/1.2/
jpayne@68: .LP
jpayne@68: PNG 1.0 Specification, October 1996:
jpayne@68: .IP
jpayne@68: .br
jpayne@68: RFC 2083
jpayne@68: .br
jpayne@68: https://www.ietf.org/rfc/rfc2083.txt
jpayne@68: .IP
jpayne@68: .br
jpayne@68: or W3C Recommendation
jpayne@68: .br
jpayne@68: https://www.w3.org/TR/REC-png-961001
jpayne@68: 
jpayne@68: .SH AUTHORS
jpayne@68: This man page: Glenn Randers-Pehrson, Cosmin Truta
jpayne@68: .LP
jpayne@68: Portable Network Graphics (PNG) Specification (Second Edition)
jpayne@68: Information technology - Computer graphics and image processing -
jpayne@68: Portable Network Graphics (PNG): Functional specification.
jpayne@68: ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others.
jpayne@68: .LP
jpayne@68: Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999):
jpayne@68: Glenn Randers-Pehrson and others.
jpayne@68: .LP
jpayne@68: Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
jpayne@68: Thomas Boutell and others.
jpayne@68: 
jpayne@68: .\" end of man page