1identify(1)                 General Commands Manual                identify(1)
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NAME

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

10       identify [options] input-file
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OVERVIEW

13       The identify program is a member of the ImageMagick(1) suite of  tools.
14       It describes the format and characteristics of one or more image files.
15       It also reports if an image is incomplete or corrupt.  The  information
16       returned includes the image number, the file name, the width and height
17       of the image, whether the image is colormapped or not,  the  number  of
18       colors  in  the  image (by default off use -define unique=true option),
19       the number of bytes in the image, the format of the image  (JPEG,  PNM,
20       etc.),  and  finally  the number of seconds it took to read and process
21       the image. Many more attributes are available with the verbose option.
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23       For more information about the identify command, point your browser  to
24       file:///usr/share/doc/ImageMagick-6/www/identify.html                or
25       http://www.imagemagick.org/script/identify.php.
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DESCRIPTION

28       Image Settings:
29         -alpha option        on, activate, off, deactivate, set, opaque, copy
30                              transparent, extract, background, or shape
31         -antialias           remove pixel-aliasing
32         -authenticate value  decrypt image with this password
33         -channel type        apply option to select image channels
34         -clip                clip along the first path from the 8BIM profile
35         -clip-mask filename  associate a clip mask with the image
36         -clip-path id        clip along a named path from the 8BIM profile
37         -colorspace type     alternate image colorspace
38         -crop geometry       cut out a rectangular region of the image
39         -define format:option
40                              define one or more image format options
41         -define unique=true  return the number of unique colors in the image
42         -density geometry    horizontal and vertical density of the image
43         -depth value         image depth
44         -endian type         endianness (MSB or LSB) of the image
45         -extract geometry    extract area from image
46         -features distance   analyze image features (e.g. contrast,  correla‐
47       tion)
48         -format "string"     output formatted image characteristics
49         -fuzz distance       colors within this distance are considered equal
50         -gamma value         of gamma correction
51         -interlace type      type of image interlacing scheme
52         -interpolate method  pixel color interpolation method
53         -limit type value    pixel cache resource limit
54         -list  type           Color, Configure, Delegate, Format, Magic, Mod‐
55       ule,
56                              Resource, or Type
57         -mask filename       associate a mask with the image
58         -matte               store matte channel if the image has one
59         -moments             report image moments
60         -monitor             monitor progress
61         -ping                efficiently determine image attributes
62         -precision value     maximum number of significant digits to print
63         -quiet               suppress all warning messages
64         -regard-warnings     pay attention to warning messages
65         -respect-parentheses settings  remain  in  effect  until  parenthesis
66       boundary
67         -sampling-factor geometry
68                              horizontal and vertical sampling factor
69         -seed value          seed a new sequence of pseudo-random numbers
70         -set attribute value set an image attribute
71         -size geometry       width and height of image
72         -strip               strip image of all profiles and comments
73         -unique              display the number of unique colors in the image
74         -units type          the units of image resolution
75         -verbose             print detailed information about the image
76         -virtual-pixel method
77                              virtual pixel access method
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79       Image Operators:
80         -grayscale method    convert image to grayscale
81         -negate              replace each pixel with its complementary color
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83       Miscellaneous Options:
84         -debug events        display copious debugging information
85         -help                print program options
86         -list type           print a list of supported option arguments
87         -log format          format of debugging information
88         -version             print version information
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90       By  default, the image format of `file' is determined by its magic num‐
91       ber.  To specify a particular image format, precede the  filename  with
92       an  image  format name and a colon (i.e. ps:image) or specify the image
93       type as the filename suffix (i.e. image.ps).  Specify 'file' as '-' for
94       standard input or output.
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NOTE

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

103       ImageMagick(1)
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107       Copyright  (C)  1999-2018 ImageMagick Studio LLC. Additional copyrights
108       and      licenses      apply      to      this      software,       see
109       file:///usr/share/doc/ImageMagick-6/www/license.html                 or
110       http://www.imagemagick.org/script/license.php
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114ImageMagick                Date: 2009/01/10 01:00:00               identify(1)
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