A Bash Script to Generate All the Required App Icon Sizes for iOS

createIcons.sh

#!/bin/bash

#This script will automatically generate all correct sized icons for IOS x and Later
#from a single .svg file
#This script requires ImageMagick (macport or brew it or something)
#usage is:
#>./createIcons.sh [source_file_name].svg

echo $1
fullfile=$1
filename=$(basename "$fullfile")
extension="${filename##*.}"
filename="${filename%.*}"

echo $filename
echo $extension

if [[ "$extension" != "svg" ]]; then
    echo "Input file with svg extension is required."
    return
fi

echo "Input file extension is valid"
echo "Make output directory"
rm -r $filename
mkdir $filename

echo "Create files"

P29=`bc <<< "scale=4; 72.5/60*29"`
P58=`bc <<< "scale=4; 72.5/60*58"`
P87=`bc <<< "scale=4; 72/60*87"`
P40=`bc <<< "scale=4; 72/60*40"`
P60=`bc <<< "scale=4; 72/60*60"`
P80=`bc <<< "scale=4; 72/60*80"`
P120=`bc <<< "scale=4; 72/60*120"`
P180=`bc <<< "scale=4; 72/60*180"`
P1024=`bc <<< "scale=4; 72/60*1024"`

convert -density $P29x$P29 $fullfile ./$filename/"$filename"_settings.png
convert -density $P58x$P58 $fullfile ./$filename/"$filename"_settings@2x.png
convert -density $P87x$P87 $fullfile ./$filename/"$filename"_settings@3x.png
convert -density $P40x$P40 $fullfile ./$filename/"$filename"_notification@2x.png
convert -density $P60x$P60 $fullfile ./$filename/"$filename"_notification@3x.png
convert -density $P80x$P80 $fullfile ./$filename/"$filename"_spotlight@2x.png
convert -density $P120x$P120 $fullfile ./$filename/"$filename"_spotlight@3x.png
convert -density $P60x$P60 $fullfile ./$filename/"$filename"_app.png
convert -density $P120x$P120 $fullfile ./$filename/"$filename"_app@2x.png
convert -density $P180x$P180 $fullfile ./$filename/"$filename"_app@3x.png
convert -density $P1024x$P1024 $fullfile ./$filename/"$filename"_store.png