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.TH identify 1 "Date: 2009/01/10 01:00:00" "ImageMagick"
.SH NAME
identify \- describes the format and characteristics of one or more image files.
.SH SYNOPSIS
.TP
\fBmagick identify\fP [\fIoptions\fP] \fIinput-file\fP
.SH OVERVIEW
The \fBidentify\fP 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 \fI-define unique=true\fP 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:///opt/alt/alt-ImageMagick/usr/share/doc/ImageMagick-7/www/identify.html or https://imagemagick.org/script/identify.php.
.SH DESCRIPTION
Image Settings:
  \-alpha option        on, activate, off, deactivate, set, opaque, copy
                       transparent, extract, background, or shape
  \-antialias           remove pixel-aliasing
  \-authenticate value  decrypt image with this password
  \-clip                clip along the first path from the 8BIM profile
  \-clip-mask filename  associate a clip mask with the image
  \-clip-path id        clip along a named path from the 8BIM profile
  \-colorspace type     alternate image colorspace
  \-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
  \-endian type         endianness (MSB or LSB) of the image
  \-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
  \-gamma value         of gamma correction
  \-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
  \-moments             report image moments
  \-monitor             monitor progress
  \-ping                efficiently determine image attributes
  \-precision value     maximum number of significant digits to print
  \-quiet               suppress all warning messages
  \-read-mask filename  associate a read mask with the image
  \-regard-warnings     pay attention to warning messages
  \-respect-parentheses settings remain in effect until parenthesis boundary
  \-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:
  \-auto-orient         automatically orient image
  \-channel mask        set the image channel mask
  \-grayscale method    convert image to grayscale
  \-negate              replace each pixel with its complementary color

Miscellaneous Options:
  \-debug events        display copious debugging information
  \-help                print program options
  \-list type           print a list of supported option arguments
  \-log format          format of debugging information
  \-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.
.SH NOTE
Although some options appear to modify the file to be identified, the identify command is strictly \fBread only\fP. For instance, the crop option crops the in-memory image and then describes the result.
.SH SEE ALSO
ImageMagick(1)

.SH COPYRIGHT

\fBCopyright (C) 1999 ImageMagick Studio LLC. Additional copyrights and licenses apply to this software, see file:///opt/alt/alt-ImageMagick/usr/share/doc/ImageMagick-7/www/license.html or https://imagemagick.org/script/license.php\fP

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