Resize all Retina @2x images in this directory to their half-resolution counterparts with ImageMagick

unretiner

#!/bin/bash

RETINA_IMAGES=`find . -name "*@2x*.png"`

for retina_path in $RETINA_IMAGES
do
  target_path="${retina_path/@2x/}"
  convert -resize 50% $retina_path $target_path
  echo "Converted ${retina_path} to ${target_path}"
done