If you have imagemagick installed and an svg icon, you can use the following to generate the other 4 types: convert -resize 48x48 icon.svg favicon.ico convert

If you have imagemagick installed and an svg icon, you can use the following to generate the other 4 types: convert -resize 48x48 icon.svg favicon.ico convert -resize 180x180 icon.svg apple.png convert -resize 192x192 icon.svg 192.png convert -resize 512x512 icon.svg 512.png