Perform operations on multiple images, such as resizing, cropping, flipping, and adding effects. Changes are applied directly to the original file.

# To resize all JPEG images in the folder to 50% of their initial size:
mogrify -resize 50% *.jpg

# To resize all images starting with "DSC" to 800x600:
mogrify -resize 800x600 DSC*

# To convert all PNG images in the folder to JPEG:
mogrify -format jpg *.png

# To halve the saturation of all image files in the current directory:
mogrify -modulate 100,50 *

# To double the brightness of all image files in the current directory:
mogrify -modulate 200 *