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Anytopnm User Manual(0) Anytopnm User Manual(0)
NAME
anytopnm - convert an arbitrary type of image file to PBM, PGM, or PPM
SYNOPSIS
anytopnm [file]
DESCRIPTION
This program is part of Netpbm(1).
anytopnm converts the input image, which may be in any of about 100 graphics formats, to
PBM, PGM, or PPM format, depending on that nature of the input image, and outputs it to
Standard Output.
To determine the format of the input, anytopnm uses the file program (possibly assisted by
the magic numbers file fragment included with Netpbm). If that fails (very few image for-
mats have magic numbers), anytopnm looks at the filename extension. If that fails, any-
topnm punts.
The type of the output file depends on the input image.
anytopnm uses the converters for particular graphics formats that are in the Netpbm pack-
age, so it can't convert any format that you couldn't convert with some other Netpbm pro-
gram. What anytopnm adds is the ability to recognize the format and choose the appropri-
ate Netpbm program to convert it. For example, if you invoke anytopnm on a GIF file, any-
topnm will recognize that it is a GIF file and therefore giftopnm knows how to convert it
to PNM, so anytopnm invokes giftopnm.
anytopnm cannot recognize every possible input format, so you may still be able to convert
an image with a specific Netpbm program when anytopnm fails to convert it.
If file indicates that the input file is compressed (either via Unix compress, gzip, or
bzip compression), anytopnm uncompresses it and proceeds as above with the uncompressed
result.
If file indicates that the input file is encoded by uuencode or btoa, anytopnm decodes it
and proceeds as above with the decoded result.
If file is - or not given, anytopnm takes its input from Standard Input.
Many image formats are capable of representing multiple images. In most cases, anytopnm
converts these to multi-image Netpbm images, but for some formats, anytopnm converts only
the first image and ignores the rest.
In the case of a multi-image GIF input, anytopnm converts all the images starting with
Netpbm 10.69 (December 2014), but only the first in earlier releases.
SEE ALSO
pamfile(1), pnm(1), file man page
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
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/anytopnm.html
netpbm documentation 15 November 2014 Anytopnm User Manual(0)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
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