The favicon for this website is a very pixelated version of an old drawing that has been lying around my computer for a few years.

Generate other favicon sizes

To select which favicon sizes to generate, I have followed the guidelines from this website. I'm not sure how relevant they are, but since they were quite clear and well-writen, I've stuck to it.

for size in 32x32 128x128 180x180; do
    out=favicon-$size.png
    magick favicon-192x192.png -resize $size $out
    echo 'Before optimisation:' $(du -b $out)
    pngout -y -q -c6 $out $out
    echo 'After optimisation: ' $(du -b $out)
    echo
done

Before optimisation: 3165 favicon-32x32.png
After optimisation:  2904 favicon-32x32.png

Before optimisation: 26726 favicon-128x128.png
After optimisation:  25351 favicon-128x128.png

Before optimisation: 45404 favicon-180x180.png
After optimisation:  42500 favicon-180x180.png