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 "$url" | sed -e "s#^file:/*#/#g")
  # Build format hint from MIME type for better ImageMagick compatibility
  format_hint=""
  case "${mimetype}" in
    "image/gif")  format_hint="gif:" ;;

echo ""
echo "--- get_imagemagick_cmd function tests ---"

# Test that ImageMagick is available (either convert or magick)
if command -v magick >/dev/null 2>&1 || command -v convert >/dev/null 2>&1; then
    echo -e "ImageMagick available: ${GREEN}YES${NC}"

    echo ""
    echo "--- Image thumbnail tests (requires ImageMagick) ---"

    # Test: PNG thumbnail generation
    if [[ -f "${TEST_DIR}/400x400.png" ]]; then