Subject: convert (ImageMagick) cheatsheet
Date: 2019-07-10 Wed 15:51

convert
  ## Input file
  [ FORMAT ':' ] INPUT_FILE.EXT [ '[' FRAME ']' ]
      FORMAT and FRAME are optional parameters.
      FORMAT specifies the format of the image data; it's useful
      when dealing with stdin.  FRAME can be used to select a
      frame from a composite (PS/PDF) or animated (GIF) image.

  ## Output options
  -resize   WIDTH 'x' HEIGHT | GEOMETRY
      Resizes the input to fit the passed geometry
  -filter   'interpolative' | 'point' | 'box' | 'triangle' | ...
      The filter to be used when resizing; use 'point' for pixel
      art, or better, the '-sample' option
  -sample   WIDTH 'x' HEIGHT
      Like '-resize' with '-filter point', but faster
  -quantize 'RGB' | 'CMY' | 'sRGB' | 'GRAY' | ...
      The colorspace to be used by the output
  -dither   'none' | 'Riemersma' | 'FloydSteinberg'
      The algorithm to be used when dithering; see 'convert
      -list dither' for a list
  -colors   N
      How many colors to include in the output palette

  ## Output file
  [ FORMAT ':' ] OUTPUT_FILE.EXT