winicontopam (1) - Linux Man Pages
winicontopam: convert a Microsoft Windows icon file into a Netpbm PAM file
winicontopam - convert a Microsoft Windows icon file into a Netpbm PAM file
winicontopam [-image=index | -allimages] [-andmasks] [-verbose] [icon_file]
All options can be abbreviated to their shortest unique prefix. You may use two hyphens instead of one to designate an option. You may use either white space or equals signs between an option name and its value.
This program is part of Netpbm(1)
winicontopam reads a Microsoft Windows icon file and converts it to one or more RGB_ALPHA Netpbm PAM files.
The alpha channel is copied from the 8-bit transparency data from the icon, if present. If no 8-bit transparency data is available, the alpha channel is constructed from the so-called ‘AND mask’.
The output goes to Standard Output.
The output is a multi-image PAM file. If you want a separate file for each image, use pamsplit(1)
In addition to the options common to all programs based on libnetpbm (most notably -quiet, see Common Options ), winicontopam recognizes the following command line options:
Convert all images in the input.
You may not specify this together with -image.
By default, winicontopam converts only the one ‘best quality’ image (largest, then most bits per pixel).
Convert image number index (starting with zero).
You may not specify this together with -allimages.
By default, winicontopam converts the ‘best quality’ image (largest, then most bits per pixel).
If the image to be extracted contains both 8-bit transparency
data and AND mask, write a five-channel Netpbm PAM file with the AND
mask stored to the fifth plane.
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winicontopam was new in Netpbm 10.63 (June 2013). It obsoleted winicontoppm by providing more function and conforming better to Netpbm conventions.
Copyright (C) 2013 by Ludolf Holzheid.
Translated to Netpbm coding style by Bryan Henderson.
For information on the PNG format, see http://schaik.com/png .