app/assets/images/favicons/favicon.sh
#!/bin/bash
arr=(57 72 76 114 120 144 152 70 150 310)
cur=$PWD
for i in "${arr[@]}"
do
filename="icon${i}.png"
command="convert favicon_logo_big.png -resize ${i}x${i}> -size ${i}x${i} xc:none +swap -gravity center -composite $filename"
echo $command
`${command}`
pngquant -f $filename --output $filename
done
convert favicon_logo_big.png -resize "32x32>" -size 32x32 xc:none +swap -gravity center -composite icon.ico