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@@ -1,49 +1,47 @@ -.TH PNG 5 "April 14, 2019" +.TH PNG 5 "April 1, 2017" .SH NAME png \- Portable Network Graphics (PNG) format - .SH DESCRIPTION PNG (Portable Network Graphics) is 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 +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 +supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits. .br -PNG is designed to work well in online viewing applications, such -as the World Wide Web, so it is fully streamable with a progressive -display option. PNG is robust, providing both full file integrity -checking and fast, simple detection of common transmission errors. -Also, PNG can store gamma and chromaticity data for improved color -matching on heterogeneous platforms. + +PNG is designed to work well in online viewing applications, such as the +World Wide Web, so it is fully streamable with a progressive display +option. PNG is robust, providing both full file integrity checking and +fast, simple detection of common transmission errors. Also, PNG can store +gamma and chromaticity data for improved color matching on heterogeneous +platforms. .SH "SEE ALSO" .BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5) .LP -PNG Specification (Second Edition), November 2003: +PNG specification (second edition), November 2003: .IP .br -https://www.w3.org/TR/2003/REC-PNG-20031110/ -.LP -PNG 1.2 Specification, July 1999: + <https://www.w3.org/TR/2003/REC-PNG-20031110/ +PNG 1.2 specification, July 1999: .IP .br https://png-mng.sourceforge.io/pub/png/spec/1.2/ .LP -PNG 1.0 Specification, October 1996: +PNG 1.0 specification, October 1996: .IP .br RFC 2083 +.IP .br https://www.ietf.org/rfc/rfc2083.txt -.IP .br -or W3C Recommendation +or (as a W3C Recommendation) at .br https://www.w3.org/TR/REC-png-961001 - .SH AUTHORS -This man page: Cosmin Truta, Glenn Randers-Pehrson +This man page: Glenn Randers-Pehrson .LP Portable Network Graphics (PNG) Specification (Second Edition) Information technology - Computer graphics and image processing - @@ -55,30 +53,22 @@ Glenn Randers-Pehrson and others (png-list). .LP Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996): Thomas Boutell and others (png-list). +.LP + -.SH COPYRIGHT +.SH COPYRIGHT NOTICE .LP -This man page is -.br -Copyright (c) 2018-2019 Cosmin Truta. -.br -Copyright (c) 1998-2006 Glenn Randers-Pehrson. -.br -See png.h for conditions of use and distribution. +This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h +for conditions of use and distribution. .LP The PNG Specification (Second Edition) is -.br Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved. .LP -The PNG-1.2 Specification is -.br -Copyright (c) 1999 Glenn Randers-Pehrson. -.br +The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson. See the specification for conditions of use and distribution. .LP -The PNG-1.0 Specification is -.br -Copyright (c) 1996 Massachusetts Institute of Technology. -.br -See the specification for conditions of use and distribution. +The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of +Technology. See the specification for conditions of use and distribution. +.LP .\" end of man page + |