OS Manuals

/usr/bin/identify

ImageMagick® is a free, open-source software suite, used for editing and manipulating digital images.

From imagemagick-7 7.1.2.35-r0 (os), captured 2026-11-05 by running identify -help (exit 0). permalink

Also provided by 1 other package version
Version: ImageMagick 7.1.2-35 Q16-HDRI x86_64 acaf7e418:20261031 https://imagemagick.org
Copyright: (C) 1999 ImageMagick Studio LLC
License: https://imagemagick.org/license/
Features: Cipher DPC HDRI OpenMP
Delegates (built-in): bzlib fontconfig freetype heic jng jp2 jpeg lcms lzma pangocairo png tiff webp x xml zlib zstd
Compiler: gcc (16.2)
Usage: identify [options ...] file [ [options ...] file ... ]

Image Settings:
  -alpha option        on, activate, off, deactivate, set, opaque, copy
                       transparent, extract, background, or shape
  -antialias           remove pixel-aliasing
  -authenticate password
                       decipher 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
  -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
  -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
  -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         automagically orient (rotate) image
  -channel mask        set the image channel mask
  -grayscale method    convert image to grayscale
  -negate              replace every 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.
Options (44)
OptionDescriptionSource
-alpha optionon, activate, off, deactivate, set, opaque, copy transparent, extract, background, or shapehelp
-antialiasremove pixel-aliasinghelp
-authenticate passworddecipher image with this passwordhelp
-clipclip along the first path from the 8BIM profilehelp
-clip-mask filenameassociate a clip mask with the imagehelp
-clip-path idclip along a named path from the 8BIM profilehelp
-colorspace typealternate image colorspacehelp
-crop geometrycut out a rectangular region of the imagehelp
-define format:optiondefine one or more image format optionshelp
-density geometryhorizontal and vertical density of the imagehelp
-depth valueimage depthhelp
-endian typeendianness (MSB or LSB) of the imagehelp
-extract geometryextract area from imagehelp
-features distanceanalyze image features (e.g. contrast, correlation)help
-format "string"output formatted image characteristicshelp
-fuzz distancecolors within this distance are considered equalhelp
-gamma valueof gamma correctionhelp
-interlace typetype of image interlacing schemehelp
-interpolate methodpixel color interpolation methodhelp
-limit typepixel cache resource limithelp
-mattestore matte channel if the image has onehelp
-momentsreport image momentshelp
-monitormonitor progresshelp
-pingefficiently determine image attributeshelp
-precision valuemaximum number of significant digits to printhelp
-quietsuppress all warning messageshelp
-regard-warningspay attention to warning messageshelp
-sampling-factor geometryhorizontal and vertical sampling factorhelp
-seed valueseed a new sequence of pseudo-random numbershelp
-size geometrywidth and height of imagehelp
-stripstrip image of all profiles and commentshelp
-uniquedisplay the number of unique colors in the imagehelp
-units typethe units of image resolutionhelp
-verboseprint detailed information about the imagehelp
-virtual-pixel methodvirtual pixel access methodhelp
-auto-orientautomagically orient (rotate) imagehelp
-channel maskset the image channel maskhelp
-grayscale methodconvert image to grayscalehelp
-negatereplace every pixel with its complementary colorhelp
-debug eventsdisplay copious debugging informationhelp
-helpprint program optionshelp
-list typeprint a list of supported option argumentshelp
-log formatformat of debugging informationhelp
-versionprint version informationhelp

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.