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NAME
     identify - describe the format and characteristics of one or
     more image files.

SYNOPSIS
     identify [ options ... ] file [ file ... ]

DESCRIPTION
     identify 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 it took to read and process the image.  An
     example line output from identify follows:

          images/aquarium.miff 640x480 PseudoClass 256c 308135b MIFF 1s

     If -verbose is set, expect additional output including any
     image comment:

          Image: images/aquarium.miff
            class: PseudoClass
            colors: 256
            signature: eb5dca81dd93ae7e6ffae99a5275a53e
            matte: False
            geometry: 640x480
            depth: 8
            bytes: 308135
            format: MIFF
            comments:

              Imported from MTV raster image:  aquarium.mtv

OPTIONS
     -cache threshold
          megabytes of memory available to the pixel cache.

          Image pixels are stored in memory until 80 megabytes of
          memory have been consumed.  Subsequent pixel operations
          are cached on disk.  Operations to memory are
          significantly faster but if your computer does not have
          a sufficient amount of free memory you may want to
          adjust this threshold value.

     -density <width>x<height>
          vertical and horizontal resolution in pixels of the
          image.

          This option specifies an image density when decoding a
          Postscript or Portable Document page.  The default is
          72 pixels per inch in the horizontal and vertical
          direction.  This option is used in concert with -page.

     -format string
          output formatted image characteristics.

          Use this option to print information about the image in
          a format of your choosing.  You can include the image
          filename, type, width, height, or other image
          attributes by embedding special format characters:

              %b   file size
              %c   comment
              %d   directory
              %e   filename extention
              %f   filename
              %h   height
              %i   input filename
              %l   label
              %m   magick
              %n   number of scenes
              %o   output filename
              %p   page number
              %q   quantum depth
              %s   scene number
              %t   top of filename
              %u   unique temporary filename
              %w   width
              %x   x resolution
              %y   y resolution
              \n   newline
              \r   carriage return

          For example,

               -format "%m:%f %wx%h"

          displays MIFF:bird.miff 512x480 for an image titled
          bird.miff and whose width is 512 and height is 480.

          If the first character of string is @, the image
          comment is read from a file titled by the remaining
          characters in the string.

     -ping
          efficiently determine image characteristics.

          This is a more efficient and less memory intensive way
          to query if an image exists and what its size is.
          Note, only the size of the first image in a multi-frame
          image file is returned.

     -size <width>x<height>+<offset>
          width and height of the image.

          Use this option to specify the width and height of raw
          images whose dimensions are unknown such as GRAY, RGB,
          or CMYK.  In addition to width and height, use -size to
          skip any header information in the image or tell the
          number of colors in a MAP image file, (e.g. -size
          640x512+256).

          For Photo CD images, choose from these sizes:

                192x128
                384x256
                768x512
               1536x1024
               3072x2048

          Finally, use this option to choose a particular
          resolution layer of a JBIG or JPEG image (e.g. -size
          1024x768).

     -verbose
          print detailed information about the image.

          This information is printed:  image name;  the image
          class (DirectClass or PseudoClass);  the total number
          of unique colors; whether there is a matte associated
          with the image; the number of runlength packets; the
          image size; the depth of the image; the image format;
          the image scene; and finally any image comment.  Refer
          to miff(1) for a description of the image class.

SEE ALSO
     display(1), animate(1), montage(1), mogrify(1), convert(1),
     combine(1), xtp(1)

COPYRIGHT
     Copyright (C) 2001 ImageMagick Studio, a non-profit
     organization dedicated to making software imaging solutions
     freely available.

     Permission is hereby granted, free of charge, to any person
     obtaining a copy of this software and associated
     documentation files ("ImageMagick"), to deal in ImageMagick
     without restriction, including without limitation the rights
     to use, copy, modify, merge, publish, distribute,
     sublicense, and/or sell copies of ImageMagick, and to permit
     persons to whom the ImageMagick is furnished to do so,
     subject to the following conditions:

     The above copyright notice and this permission notice shall
     be included in all copies or substantial portions of
     ImageMagick.

     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 ImageMagick
     Studio 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 ImageMagick or the use or
     other dealings in ImageMagick.

     Except as contained in this notice, the name of the
     ImageMagick Studio shall not be used in advertising or
     otherwise to promote the sale, use or other dealings in
     ImageMagick without prior written authorization from the
     ImageMagick Studio.

AUTHORS
     John Cristy, E.I. du Pont De Nemours and Company
     Incorporated

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