magick mogrify

Perform operations on multiple images, such as resizing, cropping, flipping, and adding effects. Changes are applied directly to the original file. See also: magick. More information: https://imagemagick.org/script/mogrify.php.

• Resize all JPEG images in the directory to 50% of their initial size:

magick mogrify -resize 50% *.jpg

• Resize all images starting with DSC to 800x600:

magick mogrify -resize 800x600 DSC*

• Convert all PNGs in the directory to JPEG:

magick mogrify -format jpg *.png

• Halve the saturation of all image files in the current directory:

magick mogrify -modulate 100,50 *

• Double the brightness of all image files in the current directory:

magick mogrify -modulate 200 *

• Reduce file sizes of all GIF images in the current directory by reducing quality:

magick mogrify -layers 'optimize' -fuzz 7% *.gif