NAME

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

SYNOPSIS

       identify [options] input-file

OVERVIEW

       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
       http://www.imagemagick.org/script/identify.php.

DESCRIPTION

       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, correlation)
         -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, Module,
                              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
         -units type          the units of image resolution
         -verbose             print detailed information about the image
         -virtual-pixel method
                              virtual pixel access method

       Image Operators:
         -negate              replace each pixel with its complementary color

       Miscellaneous Options:
         -debug events        display copious debugging information
         -help                print program options
         -log format          format of debugging information
         -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 number.   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.  image.ps).   Specify
       'file' as '-' for standard input or output.

NOTE

       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.

SEE ALSO

       ImageMagick(1)

COPYRIGHT

       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
       http://www.imagemagick.org/script/license.php