Manual: bmptopnm

Bmptopnm User Manual(1)				   General Commands Manual			     Bmptopnm User Manual(1)

NAME
       bmptopnm - convert a BMP file into a PBM, PGM, or PNM image

SYNOPSIS
       bmptopnm

       [-verbose]

       [bmpfile]

DESCRIPTION
       This program is part of Netpbm(1).

       bmptopnm reads a Microsoft Windows or OS/2 BMP file as input and produces a PBM, PGM, or PNM image as output.  If the
       input  is colormapped and contains only black and white, the output is PBM.  If the input is colormapped and contains
       only black white and gray, the output is PGM.  Otherwise, the output is PPM.

       bmptopnm understands BMP files compressed with run length encoding (RLE4/RLE8), but not if that encoding	 includes  a
       "delta" (which is rare).	 bmptopnm recognizes the delta and issues an error message.

       Before Netpbm 10.75 (June 2016), bmptopnm could not convert Version 4 or Version 5 Windows BMP images.

       bmptopnm	 cannot convert BMP files compressed with JPEG or PNG encoding.	 It recognizes the compression and issues an
       error message.  Before Netpbm 10.32 (February 2006), bmptopnm couldn't convert RLE8  BMP	 files	either,	 and  before
       Netpbm  10.85 (December 2018), it couldn't convert RLE4 (between 10.32 and 10.85, it would act like it recognized the
       format, but produce garbage output).

       Before Netpbm 10.18 (September 2003), this program could not convert BMP images with the BI_BITFIELDS  format  ("com‐
       pression type").	 It would recognize the format and issue an error message.

       bmptopnm cannot convert OS/2 BMP files with 16 bits per pixel (only because the author did not have a complete speci‐
       fication	 for them).  It recognizes the format and issues an error message.  Before Netpbm 10.16 (June 2003), it also
       could not convert Windows BMP files with 16 bits per pixel.

OPTIONS
       In addition to the options common to all programs based on libnetpbm (most notably  -quiet,  see	  Common Options  ),
       bmptopnm recognizes the following command line option:

       -verbose
	      Report contents of the BMP header to the standard error.

SEE ALSO
       ppmtobmp(1), ppmtowinicon(1), ppm(1)

AUTHOR
       Copyright (C) 1992 by David W. Sanderson.

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/bmptopnm.html

netpbm documentation				      05 December 2018				     Bmptopnm User Manual(1)