Using SIPS to convert and resize images in OS X.

# Convert format

sips -s format png image.jpg --out png/image.png

Batch command

mkdir -p png
for i in *.jpg; do sips -s format png $i --out png/$i.png;done

# Resize

Resize size to 512px on max width/height, and keep the aspect ratio.

sips -Z 512 image.png

# Set DPI

sips -s dpiHeight 72 -s dpiWidth 72 image.png

Last Update 2016/10/14 17:31:47 +0900