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