identify

Describe the format and characteristics of image files. Part of ImageMagick. More information: https://imagemagick.org/script/identify.php.

• Describe the format and basic characteristics of an image:

identify {{path/to/image}}

• Describe the format and verbose characteristics of an image:

identify -verbose {{path/to/image}}

• Collect dimensions of all JPEG files in the current directory and save them into a CSV file:

identify -format "{{%f,%w,%h\n}}" {{*.jpg}} > {{path/to/filelist.csv}}