check_command rsvg-convert
  target_file=$(echo "$url" | sed -e "s#^file:/*#/#g")
  rsvg-convert -w 100 -h 100 --keep-aspect-ratio "${target_file}" -o "${output_file}"
elif [[ x"${cmd_type}" = "ximage" ]] ; then
  im_cmd=$(get_imagemagick_cmd)
  if [[ -z "${im_cmd}" ]] ; then
    echo "ImageMagick (convert or magick) does not exist."
    exit 1
  fi
  target_file=$(echo "$url" | sed -e "s#^file:/*#/#g")