iOS App Icon Generation

IconGenerator.sh

#!/bin/bash
f=$(pwd)

rm -rf Output
mkdir Output

# iTunes
sips --resampleWidth 1024 "${f}/${1}" --out "${f}/Output/iTunesArtwork.png"

# App
sips --resampleWidth 180 "${f}/${1}" --out "${f}/Output/iPhone6Icon@3x.png"
sips --resampleWidth 120 "${f}/${1}" --out "${f}/Output/iPhone6Icon@2x.png"
sips --resampleWidth 120 "${f}/${1}" --out "${f}/Output/iPhone4Icon@2x.png"
sips --resampleWidth 152 "${f}/${1}" --out "${f}/Output/iPadIcon@2x.png"
sips --resampleWidth 76 "${f}/${1}" --out "${f}/Output/iPadIcon.png"
sips --resampleWidth 167 "${f}/${1}" --out "${f}/Output/iPadProIcon@2x.png"

# Spotlight
sips --resampleWidth 180 "${f}/${1}" --out "${f}/Output/iPhone6SpotlightIcon@3x.png"
sips --resampleWidth 120 "${f}/${1}" --out "${f}/Output/iPhone6SpotlightIcon@2x.png"
sips --resampleWidth 80 "${f}/${1}" --out "${f}/Output/iPhone4SpotlightIcon@2x.png"
sips --resampleWidth 120 "${f}/${1}" --out "${f}/Output/iPadSpotlightIcon@2x.png"
sips --resampleWidth 60 "${f}/${1}" --out "${f}/Output/iPadSpotlightIcon.png"
sips --resampleWidth 120 "${f}/${1}" --out "${f}/Output/iPadProSpotlightIcon@2x.png"

# Settings
sips --resampleWidth 87 "${f}/${1}" --out "${f}/Output/iPhone6SettingsIcon@3x.png"
sips --resampleWidth 58 "${f}/${1}" --out "${f}/Output/iPhone6SettingsIcon@2x.png"
sips --resampleWidth 58 "${f}/${1}" --out "${f}/Output/iPhone4SettingsIcon@2x.png"
sips --resampleWidth 58 "${f}/${1}" --out "${f}/Output/iPadSettingsIcon@2x.png"
sips --resampleWidth 29 "${f}/${1}" --out "${f}/Output/iPadSettingsIcon.png"
sips --resampleWidth 58 "${f}/${1}" --out "${f}/Output/iPadProSettingsIcon@2x.png"

open ./Output/