<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=us-ascii">
<title>GraphicsMagick GM Utility</title>
<style type=text/css>
<!--
@page { size: 8.5in 11in }
TD P { color: #000000; font-family: "Verdana", "Arial", "Helvetica", sans-serif; font-size: 14pt }
P { color: #000000; font-family: "Verdana", "Arial", "Helvetica", sans-serif; font-size: 14pt }
A:link { color: #0085c0 }
A:visited { color: #800080 }
-->
</style>
</head>
<body LANG="en-US" TEXT="#000000" LINK="#0085c0" VLINK="#800080" BGCOLOR="#ffffff">
<a name="top"></a>
<table border=0 cellpadding=10 cellspacing=0 style="margin-top:-17px" width="100%"><tr><td>
<br> <br>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="gm identify"></a>gm identify
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="ident-top"></a>NAME
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
identify - describe an image or image sequence.
</td></tr></table>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="ident-contents"></a>Contents
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<dl>
<dt>
<a href="#ident-syno">Synopsis</a>
</dt>
<dt>
<a href="#ident-desc">Description</a>
</dt>
<dt>
<a href="#ident-opti">Options</a>
</dt>
<dt>
<a href="#ident-auth">Authors</a>
</dt>
<dt>
<a href="#ident-copy">Copyright</a>
</dt>
</dl>
</td></tr></table>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="ident-syno"></a>Synopsis
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<p>
<strong>identify</strong> <em>file</em> [ <em>file</em> ... ]
<br> <br>
</td></tr></table>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="ident-desc"></a>Description
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<p>
<strong>Identify</strong> describes the format and characteristics of one or more
image files. It will also report if an image is incomplete or corrupt.
The information displayed includes the scene number, the file name, the
width and height of the image, whether the image is colormapped or not,
the number of colors in the image, the number of bytes in the image, the
format of the image (JPEG, PNM, etc.), and finally the number of seconds
in both user time and elapsed time it took to read and process the image.
If -verbose or +ping are provided as an option, the pixel read rate is
also displayed. An example line output from <strong>identify</strong> follows:
<pre>
images/aquarium.miff 640x480 PseudoClass 256c
308135b MIFF 0.000u 0:01
</pre>
<p>
If <tt>-verbose</tt> is set, expect additional output including any image
comment:
<br> <br>
<pre>
Image: images/aquarium.miff
class: PseudoClass
colors: 256
signature: eb5dca81dd93ae7e6ffae99a527eb5dca8...
matte: False
geometry: 640x480
depth: 8
bytes: 308135
format: MIFF
comments:
Imported from MTV raster image: aquarium.mtv
</pre>
<p>
For some formats, additional format-specific information about the file
will be written if the <tt>-debug coder</tt> or <tt>-debug all</tt> option
is used.
</td></tr></table>
<p>
<i><a href="#top">Back to Contents</a></i>
</p>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="ident-opti"></a>Options
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="ident-opti"></a>Identify options
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<p>
Options are processed in command line order. Any option you specify on
the command line remains in effect for the set of images immediately
following, until the set is terminated by the appearance of any option
or <strong>-noop</strong>.
<p>
For a more detailed description of each option, see
Options, above.
<a href="GraphicsMagick.html"><em>GraphicsMagick(1)</em></a>.
<br> <br>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-authenticate">-authenticate</a> <i><string></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>decrypt image with this password</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
-debug <i><events></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>enable debug printout</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-define">-define</a> <i><key></i>{<i>=<value></i>}<i>,...</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>add coder/decoder specific options</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-density">-density</a> <i><width>x<height></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>horizontal and vertical resolution in pixels of the image</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-depth">-depth</a> <i><value></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>depth of the image</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-format">-format</a> <i><string></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>output formatted image characteristics</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
-help
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>print usage instructions</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-interlace">-interlace</a> <i><type></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>the type of interlacing scheme</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-limit">-limit</a> <i><type> <value></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>Disk, File, Map, Memory, or Pixels resource limit</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-log">-log</a> <i><string></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>Specify format for debug log</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
-ping
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>efficiently determine image characteristics</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-sampling-factor">-sampling-factor</a> <i><horizontal_factor>x<vertical_factor></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>chroma subsampling factors</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-size">-size</a> <i><width>x<height></i>{<i>+offset</i>}<i></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>width and height of the image</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-verbose">-verbose</a>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>print detailed information about the image</td></tr></table>
<table BORDER=0 WIDTH="94%">
<tr>
<td width="3%"><br></td>
<td ALIGN=LEFT BGCOLOR="#9EBAC6">
<img SRC="../images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#FFFFFF"><font size="+1">
<a href="GraphicsMagick.html#details-version">-version</a>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0" cellpadding="8"> <tr><td width="6%"><br></td><td>print GraphicsMagick version string</td></tr></table>
<p>
For a more detailed description of each option, see
Options, above.
<a href="GraphicsMagick.html"><em>GraphicsMagick(1)</em></a>.
<br> <br>
</td></tr></table>
<p>
<i><a href="#top">Back to Contents</a></i>
</p>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="auth"></a>Authors
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<p>
<em>
John Cristy,<br>
Bob Friesenhahn,<br>
Glenn Randers-Pehrson,<br>
William Radcliff,<br>
Leonard Rosenthol.
</em>
<br> <br>
</td></tr></table>
<p>
<i><a href="#top">Back to Contents</a></i>
</p>
<table BORDER=0 WIDTH="100%">
<tr>
<td ALIGN=LEFT bgcolor="#52799E"><img
SRC="../images/right_triangle.png" ALT=">" BORDER=0
height=14 width=15><b><font face="Helvetica, Arial"><font
color="#FFFFFF"><font size="+1">
<a NAME="copy"></a>Copyright
</font></font></font></b></td></tr></table>
<table width="94%" border="0" cellspacing="0" cellpadding="8">
<tr><td width="3%"><br></td><td>
<p>
<strong>Copyright (C) 2002 - 2008 GraphicsMagick Group, an organization
dedicated to making software imaging solutions freely available.</strong>
<p>
<strong>Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files
("GraphicsMagick"), to deal in GraphicsMagick without restriction,
including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of GraphicsMagick,
and to permit persons to whom GraphicsMagick is furnished to do so,
subject to the following conditions:</strong>
<p>
<strong>The above copyright notice and this permission notice shall be included
in all copies or substantial portions of GraphicsMagick.</strong>
<p>
<strong>The software is provided "as is", without warranty of any kind,
express or implied, including but not limited to the warranties of
merchantability, fitness for a particular purpose and noninfringement.
In no event shall GraphicsMagick Group be liable for any claim, damages
or other liability, whether in an action of contract, tort or otherwise,
arising from, out of or in connection with GraphicsMagick or the use or
other dealings in GraphicsMagick.</strong>
<p>
<strong>Except as contained in this notice, the name of the GraphicsMagick
Group shall not be used in advertising or otherwise to promote the sale,
use or other dealings in GraphicsMagick without prior written
authorization from the GraphicsMagick Group.</strong>
<p>
<strong>Additional copyrights and licenses apply to this software. You should
have received a copy of Copyright.txt with this package, which describes
additional copyrights and licenses which apply to this software;
otherwise see http://www.graphicsmagick.org/www/Copyright.html.</strong>
</td></tr></table>
<p>
<i><a href="#top">Back to Contents</a></i>
</p>
<HR>
[<a href="../index.html">Home</a>] [<a href="utilities.html">Utilities Index</a>]
<BR>
<p align=center <a href="Copyright.html">Copyright © GraphicsMagick Group 2002, 2003, 2004</a></p></td>
</tr></table>
</body></html>
