ImageMagick

Basic

• Describe an image: magick identify image.jpg
• Remove exif metadata: exiftool -all= image.jpg

Image manipulation

• Geometry docs: http://www.imagemagick.org/script/command-line-processing.php#geometry
  • width: Width given, height automagically selected to preserve aspect ratio.
  • xheight: Height given, width automagically selected to preserve aspect ratio.
  • widthxheight: Maximum values of height and width given, aspect ratio preserved.

Resize image

mogrify -strip -auto-orient -resize 1200x1200 -quality 75 *.jpg