NAME

       pngtopnm - Convert a PNG image to PNM: replaced by pngtopam

SYNOPSIS

       pngtopnm [-verbose] [-alpha | -mix] [-background=color] [-gamma=value] [-text=filename] [-time] [pngfile]

       Minimum unique abbreviation of option is acceptable.  You may use double hyphens instead of single hyphen
       to  denote  options.  You may use white space in place of the equals sign to separate an option name from
       its value.

DESCRIPTION

       This program is part of Netpbm(1).

       pngtopnm was obsoleted by pngtopam(1), introduced  with  Netpbm  10.44  (September  2008).   pngtopam  is
       backward  compatible with pngtopnm, plus adds many additional functions, including the ability to produce
       a PAM image that includes a transparency (alpha) channel.

       Starting in Release 10.48, pngtopnm is just an alias for pngtopam.

       pngtopnm remained in the Netpbm package through Release  10.47  because  it  may  have  fewer  bugs  than
       pngtopam  in those releases, and may be faster in some environments.  But pngtopnm's incompatibility with
       the most current PNG libraries makes it impractical to maintain along with pngtopam now.

       In releases before 10.48, you can use the pngtopam documentation for pngtopnm, considering the  following
       differences:

       •      pngtopnm options are a subset of pngtopam's, as documented above.

       •      Any  change  that  the  pngtopam  manual  says  happened in or after Netpbm 10.44 doesn't apply to
              pngtopnm.

DOCUMENT SOURCE

       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The  master  documentation
       is at

              http://netpbm.sourceforge.net/doc/pngtopnm.html

netpbm documentation                              22 July 2008                           Pngtopnm User Manual(1)