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@@ -1,47 +1,49 @@
-.TH PNG 5 "June 26, 2010"
+.TH PNG 5 "December 1, 2018"
.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"
-.IR libpng(3) ", " zlib(3) ", " deflate(5) ", and " zlib(5)
+.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
- <http://www.w3.org/TR/2003/REC-PNG-20031110/
-PNG 1.2 specification, July 1999:
+https://www.w3.org/TR/2003/REC-PNG-20031110/
+.LP
+PNG 1.2 Specification, July 1999:
.IP
.br
-http://www.libpng.org/pub/png
+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
-ftp://ftp.rfc-editor.org:/in-notes/rfc2083.txt
+https://www.ietf.org/rfc/rfc2083.txt
+.IP
.br
-or (as a W3C Recommendation) at
+or W3C Recommendation
.br
-http://www.w3.org/TR/REC-png.html
+https://www.w3.org/TR/REC-png-961001
+
.SH AUTHORS
-This man page: Glenn Randers-Pehrson
+This man page: Cosmin Truta, Glenn Randers-Pehrson
.LP
Portable Network Graphics (PNG) Specification (Second Edition)
Information technology - Computer graphics and image processing -
@@ -53,22 +55,30 @@ 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 NOTICE
+.SH COPYRIGHT
.LP
-This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h
-for conditions of use and distribution.
+This man page is
+.br
+Copyright (c) 2018 Cosmin Truta.
+.br
+Copyright (c) 1998-2006 Glenn Randers-Pehrson.
+.br
+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 copyright (c) 1999 Glenn Randers-Pehrson.
+The PNG-1.2 Specification is
+.br
+Copyright (c) 1999 Glenn Randers-Pehrson.
+.br
See the specification for conditions of use and distribution.
.LP
-The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
-Technology. 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.
.\" end of man page
-