Png_info will print most of the information available from a PNG file other than the image itself.
brlcad(1), png-pix(1), bw-png(1), pix-png(1), png-bw(1), pix(5), bw(5).
John R. Anderson
This software is Copyright (c) 1998-2013 by the United States Government as represented by U.S. Army Research Laboratory.
Reports of bugs or problems should be submitted via electronic mail to <firstname.lastname@example.org>.