image files.

       identify [options] input-file

       The identify program is a member of the ImageMagick(1) suite of  tools.
       It 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 (by default off use -define unique=true option),
       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.

       For more information about the identify command, point your browser  to
       file:///usr/share/doc/imagemagick/www/identify.html                  or

       Image Settings:
         -antialias           remove pixel-aliasing
         -authenticate value  decrypt image with this password
         -channel type        apply option to select image channels
         -crop geometry       cut out a rectangular region of the image
         -define format:option
                              define one or more image format options
         -define unique=true  return the number of unique colors in the image
         -density geometry    horizontal and vertical density of the image
         -depth value         image depth
         -extract geometry    extract area from image
         -features distance   analyze image features (e.g. contrast,  correla-
         -format "string"     output formatted image characteristics
         -fuzz distance       colors within this distance are considered equal
         -interlace type      type of image interlacing scheme
         -interpolate method  pixel color interpolation method
         -limit type value    pixel cache resource limit
         -list  type           Color, Configure, Delegate, Format, Magic, Mod-
                              Resource, or Type
         -matte               store matte channel if the image has one
         -monitor             monitor progress
         -ping                efficiently determine image attributes
         -quiet               suppress all warning messages
         -regard-warnings     pay attention to warning messages
         -sampling-factor geometry
                              horizontal and vertical sampling factor
         -seed value          seed a new sequence of pseudo-random numbers
         -set attribute value set an image attribute
         -size geometry       width and height of image
         -strip               strip image of all profiles and comments
         -unique              display the number of unique colors in the image
         -list type           print a list of supported option arguments
         -version             print version information

       By default, the image format of `file' is determined by its magic  num-
       ber.   To  specify a particular image format, precede the filename with
       an image format name and a colon (i.e. ps:image) or specify  the  image
       type as the filename suffix (i.e.  Specify 'file' as '-' for
       standard input or output.

       Although some options appear to modify the file to be  identified,  the
       identify  command  is strictly read only. For instance, the crop option
       crops the in-memory image and then describes the result.


       Copyright (C) 1999-2012 ImageMagick Studio LLC.  Additional  copyrights
       and       licenses      apply      to      this      software,      see
       file:///usr/share/doc/imagemagick/www/license.html                   or

ImageMagick                Date: 2009/01/10 01:00:00               identify(1)
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