mat.services/nix/optimize-images.nix

18 lines
704 B
Nix

{ bc, pngquant, scour, writeShellScriptBin }:
writeShellScriptBin "optimize-images" ''
shopt -s globstar nullglob
${scour}/bin/scour -i static/image/_favicon.svg -o static/image/favicon.svg
for image in content/**/_*.png static/image/**/_*.png; do
path=$(dirname $image)
file=$(basename $image)
newimage=$path/''${file:1}
echo "optimizing $image"
${pngquant}/bin/pngquant --quality 80-90 -f -o $newimage $image
oldsize=$(stat --format=%s $image)
newsize=$(stat --format=%s $newimage)
pct=$(${bc}/bin/bc <<< "scale=1; $newsize * 100 / $oldsize")
echo "size went from "$(($oldsize / 1024))"KB to "$(($newsize / 1024))"KB ("$pct"% as large as original)"
done
''