1Pngtopnm User Manual(0) Pngtopnm User Manual(0)
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6 pngtopnm - Convert a PNG image to PNM: replaced by pngtopam
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10 pngtopnm [-verbose] [-alpha | -mix] [-background=color] [-gamma=value]
11 [-text=filename] [-time] [pngfile]
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13 Minimum unique abbreviation of option is acceptable. You may use dou‐
14 ble hyphens instead of single hyphen to denote options. You may use
15 white space in place of the equals sign to separate an option name from
16 its value.
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21 This program is part of Netpbm(1).
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23 pngtopnm was obsoleted by pngtopam(1), introduced with Netpbm 10.44
24 (September 2008). pngtopam is backward compatible with pngtopnm, plus
25 adds many additional functions, including the ability to produce a PAM
26 image that includes a transparency (alpha) channel.
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28 Starting in Release 10.48, pngtopnm is just an alias for pngtopam.
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30 pngtopnm remained in the Netpbm package through Release 10.47 because
31 it may have fewer bugs than pngtopam in those releases, and may be
32 faster in some environments. But pngtopnm's incompatibility with the
33 most current PNG libraries makes it impractical to maintain along with
34 pngtopam now.
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36 In releases before 10.48, you can use the pngtopam documentation for
37 pngtopnm, considering the following differences:
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42 · pngtopnm options are a subset of pngtopam's, as documented
43 above.
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46 · Any change that the pngtopam manual says happened in or after
47 Netpbm 10.44 doesn't apply to pngtopnm.
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50 This manual page was generated by the Netpbm tool 'makeman' from HTML
51 source. The master documentation is at
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53 http://netpbm.sourceforge.net/doc/pngtopnm.html
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55netpbm documentation 22 July 2008 Pngtopnm User Manual(0)