-.TH PNG 5 "August 21, 2014"
+.TH PNG 5 "January 15, 2016"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION
PNG 1.2 specification, July 1999:
.IP
.br
-http://www.libpng.org/pub/png
+http://png-mng.sourceforge.net/pub/png/spec/1.2/
.LP
PNG 1.0 specification, October 1996:
.IP
.br
or (as a W3C Recommendation) at
.br
-http://www.w3.org/TR/REC-png.html
+http://www.w3.org/TR/REC-png-961001
.SH AUTHORS
This man page: Glenn Randers-Pehrson
.LP