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64 lines
1.3 KiB
Org Mode
64 lines
1.3 KiB
Org Mode
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:PROPERTIES:
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:ID: a7dd09f3-5bf7-4628-aaed-a5ae64c76f41
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:END:
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#+title: Command line: ImageMagick
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#+date: "2021-05-09 19:55:50 +08:00"
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#+date_modified: "2021-07-20 23:31:03 +08:00"
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#+language: en
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The swiss army knife for picture manipulation in the command line.
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For future reference, this mainly use v7 which has Git-style interface (which is way better, IMO).
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* Synopsis
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#+begin_src shell
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magick [subcommand [subcommand_options...]]
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#+end_src
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* Subcommands
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- =convert= - resize images, convert between formats, apply filter effects
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- =identify= - print information on the image
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- =mogrify= - similar to =convert= except modifies the original file
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* Examples
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A comprehensive tool calls for a comprehensive introduction.
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** Resize an image by half
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#+begin_src shell
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magick resize $INPUT -resize 50% $OUTPUT
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#+end_src
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You can find out various geometry options from the [[https://imagemagick.org/script/command-line-processing.php#geometry][documentation]].
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** Print the information
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#+begin_src shell
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magick identify $INPUT
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#+end_src
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** Use ImageMagick as a color picker
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You can use any tool that can pipe an image to other tools.
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#+begin_src shell
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maim --select --shader crosshair --tolerance 0 --hidecursor | magick convert - -resize 1x1\! -format '%[hex:p{0,0}]' info:-
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#+end_src
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