Resize image using Imagemagick

Imagemagick is a powerful image manipulation program. This tutorial is about resizing image with Imagemagick.

Resize an image to 500px width.

mogrify -resize 500 image.png

Resize an image to 500x300, with aspect ratio preserved.

mogrify -resize 500x300 image.png

Force resize an image to 500x300.

mogrify -resize 500x300! image.png

Resize multiple images.

mogrify -resize 500x300 *.png