{
  writers,
  imagemagick,
}:
writers.writeDashBin "image-convert-tolino" ''
  source_image="$1"

  if [ -e "$source_image" ]; then
    ${imagemagick}/bin/convert -type Grayscale -resize 758x1024 "$source_image" "suspend.jpg"
  else
    echo >/dev/stderr "$1 must exist."
    exit 1
  fi
''