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     <title>ImageMagick: Command-line Tools: Identify</title>
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 <p class="text-center"><a href="identify.html#usage">Example Usage</a> • <a href="identify.html#options">Option Summary</a></p>

 <p class="lead magick-description">The <code>identify</code> program describes the format and characteristics of one or more image files. It also reports if an image is incomplete or corrupt. The information returned includes the image 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 it took to read and process the image.  Many more attributes are available with the verbose option.  See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>identify</code> command or see below for example usages of the command.</p>

 <h2 class="magick-header"><a id="usage"></a>Example Usage</h2>

 <p>We list a few examples of the <code>identify</code> command here to illustrate its usefulness and ease of use. To get started, lets identify an image in the JPEG format:</p>

 <pre>
 -> identify rose.jpg
 rose.jpg JPEG 70x46 70x46+0+0 8-bit sRGB 2.36KB 0.000u 0:00.000
 </pre>

 <p>Next, we look at the same image in greater detail:</p>

 <pre class="pre-scrollable">-> identify -verbose rose.jpg
 Image: rose.jpg
   Format: JPEG (Joint Photographic Experts Group JFIF format)
   Mime type: images/jpeg
   Class: DirectClass
   Geometry: 70x46+0+0
   Units: Undefined
   Type: TrueColor
   Endianess: Undefined
   Colorspace: sRGB
   Depth: 8-bit
   Channel depth:
     red: 8-bit
     green: 8-bit
     blue: 8-bit
   Channel statistics:
     Pixels: 3220
     Red:
       min: 35 (0.137255)
       max: 255 (1)
       mean: 145.57 (0.570865)
       standard deviation: 67.2976 (0.263912)
       kurtosis: -1.37971
       skewness: 0.0942169
       entropy: 0.974889
     Green:
       min: 33 (0.129412)
       max: 255 (1)
       mean: 89.2193 (0.349879)
       standard deviation: 52.0803 (0.204236)
       kurtosis: 2.70722
       skewness: 1.82562
       entropy: 0.877139
     Blue:
       min: 11 (0.0431373)
       max: 255 (1)
       mean: 80.3742 (0.315193)
       standard deviation: 53.8536 (0.21119)
       kurtosis: 2.90978
       skewness: 1.92617
       entropy: 0.866692
   Image statistics:
     Overall:
       min: 11 (0.0431373)
       max: 255 (1)
       mean: 105.055 (0.411979)
       standard deviation: 58.1422 (0.228008)
       kurtosis: 1.25759
       skewness: 1.4277
       entropy: 0.90624
   Rendering intent: Perceptual
   Gamma: 0.454545
   Chromaticity:
     red primary: (0.64,0.33)
     green primary: (0.3,0.6)
     blue primary: (0.15,0.06)
     white point: (0.3127,0.329)
   Background color: white
   Border color: srgb(223,223,223)
   Matte color: grey74
   Transparent color: black
   Interlace: None
   Intensity: Undefined
   Compose: Over
   Page geometry: 70x46+0+0
   Dispose: Undefined
   Iterations: 0
   Compression: JPEG
   Quality: 92
   Orientation: Undefined
   Properties:
     date:create: 2014-11-09T09:00:35-05:00
     date:modify: 2014-11-09T09:00:35-05:00
     jpeg:colorspace: 2
     jpeg:sampling-factor: 2x2,1x1,1x1
     signature: 22a99838bd5594250f706d1d9383b2830f439fcbaf1455cbe2f7f59a4deb065a
   Artifacts:
     filename: rose.jpg
     verbose: true
   Tainted: False
   Filesize: 2.36KB
   Number pixels: 3.22K
   Pixels per second: 3.22EB
   User time: 0.000u
   Elapsed time: 0:01.000
   Version: ImageMagick Q16 http://www.imagemagick.org
 </pre>

 <p>To get the print size in inches of an image at 72 DPI, use:</p>

 <pre>
 -> identify -format "%[fx:w/72] by %[fx:h/72] inches" document.png
 8.5 x 11 inches
 </pre>

 <p>The depth and dimensions of a raw image must be specified on the command line:</p>

 <pre>
 -> identify -depth 8 -size 640x480 image.raw
 image.raw RGB 640x480 sRGB 9kb 0.000u 0:01
 </pre>

 <p>Here we display the image texture features, moments, perceptual hash, and the number of unique colors in the image:</p>

 <pre>
 -> identify -verbose -features 1 -moments -unique image.png
 </pre>

 <p>Here is a special define that outputs the location of the minimum or maximum pixel of the image:</p>

 <pre>
 identify -precision 5 -define identify:locate=maximum -define identify:limit=3 image.png
 </pre>

 <p>You can find additional examples of using <code>identify</code> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>

 <h2 class="magick-header"><a id="options"></a>Option Summary</h2>

 <p>The <code>identify</code> command recognizes these options.  Click on an option to get more details about how that option works.</p>

 <table class="table table-condensed table-striped">
   <tbody>
   <tr>
     <th align="left">Option</th>
     <th align="left">Description</th>
   </tr>

   <tr>
     <td><a href="command-line-options.html#alpha">-alpha</a></td>
     <td>on, activate, off, deactivate, set, opaque, copy",
 transparent, extract, background, or shape the alpha channel</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#antialias">-antialias</a></td>
     <td>remove pixel-aliasing</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td>
     <td>decrypt image with this password</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#channel">-channel <var>type</var></a></td>
     <td>apply option to select image channels</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#clip">-clip</a></td>
     <td>clip along the first path from the 8BIM profile</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td>
     <td>associate clip mask with the image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td>
     <td>clip along a named path from the 8BIM profile</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td>
     <td>set image colorspace</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td>
     <td>crop the image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#debug">-debug <var>events</var></a></td>
     <td>display copious debugging information</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#define">-define <var>format:option</var></a></td>
     <td>define one or more image format options</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#density">-density <var>geometry</var></a></td>
     <td>horizontal and vertical density of the image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#depth">-depth <var>value</var></a></td>
     <td>image depth</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#endian">-endian <var>type</var></a></td>
     <td>endianness (MSB or LSB) of the image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td>
     <td>extract area from image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#features">-features <var>distance</var></a></td>
     <td>analyze image features (e.g. contract, correlations, etc.).</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#format_identify_">-format <var>string</var></a></td>
     <td>output formatted image characteristics</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td>
     <td>level of gamma correction</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#intensity">-grayscale <var>method</var></a></td>
     <td>convert image to grayscale</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#help">-help</a></td>
     <td>print program options</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td>
     <td>type of image interlacing scheme</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td>
     <td>pixel color interpolation method</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td>
     <td>pixel cache resource limit</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#list">-list <var>type</var></a></td>
     <td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#log">-log <var>format</var></a></td>
     <td>format of debugging information</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#mask">-mask <var>filename</var></a></td>
     <td>associate a mask with the image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#moments">-moments</a></td>
     <td>display image moments and perceptual hash.</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#monitor">-monitor</a></td>
     <td>monitor progress</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#negate">-negate</a></td>
     <td>replace each pixel with its complementary color </td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#precision">-precision <var>value</var></a></td>
     <td>set the maximum number of significant digits to be printed</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#quiet">-quiet</a></td>
     <td>suppress all warning messages</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
     <td>pay attention to warning messages.</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
     <td>settings remain in effect until parenthesis boundary.</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td>
     <td>horizontal and vertical sampling factor</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#set">-set <var>attribute value</var></a></td>
     <td>set an image attribute</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#size">-size <var>geometry</var></a></td>
     <td>width and height of image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#strip">-strip</a></td>
     <td>strip image of all profiles and comments</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#unique">-unique</a></td>
     <td>display image the number of unique colors in the image.</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#units">-units <var>type</var></a></td>
     <td>the units of image resolution</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#verbose">-verbose</a></td>
     <td>print detailed information about the image</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#version">-version</a></td>
     <td>print version information</td>
   </tr>

   <tr>
     <td><a href="command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td>
     <td>access method for pixels outside the boundaries of the image</td>
   </tr>

   </tbody>
 </table>

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	<title>ImageMagick: Command-line Tools: Identify</title>
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	<p class="text-center"><a href="identify.html#usage">Example Usage</a> • <a href="identify.html#options">Option Summary</a></p>

	<p class="lead magick-description">The <code>identify</code> program describes the format and characteristics of one or more image files. It also reports if an image is incomplete or corrupt. The information returned includes the image 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 it took to read and process the image. Many more attributes are available with the verbose option. See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>identify</code> command or see below for example usages of the command.</p>

	<h2 class="magick-header"><a id="usage"></a>Example Usage</h2>

	<p>We list a few examples of the <code>identify</code> command here to illustrate its usefulness and ease of use. To get started, lets identify an image in the JPEG format:</p>

	<pre>
	-> identify rose.jpg
	rose.jpg JPEG 70x46 70x46+0+0 8-bit sRGB 2.36KB 0.000u 0:00.000
	</pre>

	<p>Next, we look at the same image in greater detail:</p>

	<pre class="pre-scrollable">-> identify -verbose rose.jpg
	Image: rose.jpg
	Format: JPEG (Joint Photographic Experts Group JFIF format)
	Mime type: images/jpeg
	Class: DirectClass
	Geometry: 70x46+0+0
	Units: Undefined
	Type: TrueColor
	Endianess: Undefined
	Colorspace: sRGB
	Depth: 8-bit
	Channel depth:
	red: 8-bit
	green: 8-bit
	blue: 8-bit
	Channel statistics:
	Pixels: 3220
	Red:
	min: 35 (0.137255)
	max: 255 (1)
	mean: 145.57 (0.570865)
	standard deviation: 67.2976 (0.263912)
	kurtosis: -1.37971
	skewness: 0.0942169
	entropy: 0.974889
	Green:
	min: 33 (0.129412)
	max: 255 (1)
	mean: 89.2193 (0.349879)
	standard deviation: 52.0803 (0.204236)
	kurtosis: 2.70722
	skewness: 1.82562
	entropy: 0.877139
	Blue:
	min: 11 (0.0431373)
	max: 255 (1)
	mean: 80.3742 (0.315193)
	standard deviation: 53.8536 (0.21119)
	kurtosis: 2.90978
	skewness: 1.92617
	entropy: 0.866692
	Image statistics:
	Overall:
	min: 11 (0.0431373)
	max: 255 (1)
	mean: 105.055 (0.411979)
	standard deviation: 58.1422 (0.228008)
	kurtosis: 1.25759
	skewness: 1.4277
	entropy: 0.90624
	Rendering intent: Perceptual
	Gamma: 0.454545
	Chromaticity:
	red primary: (0.64,0.33)
	green primary: (0.3,0.6)
	blue primary: (0.15,0.06)
	white point: (0.3127,0.329)
	Background color: white
	Border color: srgb(223,223,223)
	Matte color: grey74
	Transparent color: black
	Interlace: None
	Intensity: Undefined
	Compose: Over
	Page geometry: 70x46+0+0
	Dispose: Undefined
	Iterations: 0
	Compression: JPEG
	Quality: 92
	Orientation: Undefined
	Properties:
	date:create: 2014-11-09T09:00:35-05:00
	date:modify: 2014-11-09T09:00:35-05:00
	jpeg:colorspace: 2
	jpeg:sampling-factor: 2x2,1x1,1x1
	signature: 22a99838bd5594250f706d1d9383b2830f439fcbaf1455cbe2f7f59a4deb065a
	Artifacts:
	filename: rose.jpg
	verbose: true
	Tainted: False
	Filesize: 2.36KB
	Number pixels: 3.22K
	Pixels per second: 3.22EB
	User time: 0.000u
	Elapsed time: 0:01.000
	Version: ImageMagick Q16 http://www.imagemagick.org
	</pre>

	<p>To get the print size in inches of an image at 72 DPI, use:</p>

	<pre>
	-> identify -format "%[fx:w/72] by %[fx:h/72] inches" document.png
	8.5 x 11 inches
	</pre>

	<p>The depth and dimensions of a raw image must be specified on the command line:</p>

	<pre>
	-> identify -depth 8 -size 640x480 image.raw
	image.raw RGB 640x480 sRGB 9kb 0.000u 0:01
	</pre>

	<p>Here we display the image texture features, moments, perceptual hash, and the number of unique colors in the image:</p>

	<pre>
	-> identify -verbose -features 1 -moments -unique image.png
	</pre>

	<p>Here is a special define that outputs the location of the minimum or maximum pixel of the image:</p>

	<pre>
	identify -precision 5 -define identify:locate=maximum -define identify:limit=3 image.png
	</pre>

	<p>You can find additional examples of using <code>identify</code> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>

	<h2 class="magick-header"><a id="options"></a>Option Summary</h2>

	<p>The <code>identify</code> command recognizes these options. Click on an option to get more details about how that option works.</p>

	<table class="table table-condensed table-striped">
	<tbody>
	<tr>
	<th align="left">Option</th>
	<th align="left">Description</th>
	</tr>

	<tr>
	<td><a href="command-line-options.html#alpha">-alpha</a></td>
	<td>on, activate, off, deactivate, set, opaque, copy",
	transparent, extract, background, or shape the alpha channel</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#antialias">-antialias</a></td>
	<td>remove pixel-aliasing</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td>
	<td>decrypt image with this password</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#channel">-channel <var>type</var></a></td>
	<td>apply option to select image channels</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#clip">-clip</a></td>
	<td>clip along the first path from the 8BIM profile</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td>
	<td>associate clip mask with the image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td>
	<td>clip along a named path from the 8BIM profile</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td>
	<td>set image colorspace</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td>
	<td>crop the image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#debug">-debug <var>events</var></a></td>
	<td>display copious debugging information</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#define">-define <var>format:option</var></a></td>
	<td>define one or more image format options</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#density">-density <var>geometry</var></a></td>
	<td>horizontal and vertical density of the image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#depth">-depth <var>value</var></a></td>
	<td>image depth</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#endian">-endian <var>type</var></a></td>
	<td>endianness (MSB or LSB) of the image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td>
	<td>extract area from image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#features">-features <var>distance</var></a></td>
	<td>analyze image features (e.g. contract, correlations, etc.).</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#format_identify_">-format <var>string</var></a></td>
	<td>output formatted image characteristics</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td>
	<td>level of gamma correction</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#intensity">-grayscale <var>method</var></a></td>
	<td>convert image to grayscale</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#help">-help</a></td>
	<td>print program options</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td>
	<td>type of image interlacing scheme</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td>
	<td>pixel color interpolation method</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td>
	<td>pixel cache resource limit</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#list">-list <var>type</var></a></td>
	<td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#log">-log <var>format</var></a></td>
	<td>format of debugging information</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#mask">-mask <var>filename</var></a></td>
	<td>associate a mask with the image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#moments">-moments</a></td>
	<td>display image moments and perceptual hash.</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#monitor">-monitor</a></td>
	<td>monitor progress</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#negate">-negate</a></td>
	<td>replace each pixel with its complementary color </td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#precision">-precision <var>value</var></a></td>
	<td>set the maximum number of significant digits to be printed</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#quiet">-quiet</a></td>
	<td>suppress all warning messages</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
	<td>pay attention to warning messages.</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
	<td>settings remain in effect until parenthesis boundary.</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td>
	<td>horizontal and vertical sampling factor</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#set">-set <var>attribute value</var></a></td>
	<td>set an image attribute</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#size">-size <var>geometry</var></a></td>
	<td>width and height of image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#strip">-strip</a></td>
	<td>strip image of all profiles and comments</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#unique">-unique</a></td>
	<td>display image the number of unique colors in the image.</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#units">-units <var>type</var></a></td>
	<td>the units of image resolution</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#verbose">-verbose</a></td>
	<td>print detailed information about the image</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#version">-version</a></td>
	<td>print version information</td>
	</tr>

	<tr>
	<td><a href="command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td>
	<td>access method for pixels outside the boundaries of the image</td>
	</tr>

	</tbody>
	</table>

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