Usage:
  glycin-thumbnailer [OPTION…]

Help Options:
  -h, --help                   Show help options
  --help-all                   Show all help options
  --help-gapplication          Show GApplication options

Application Options:
  -i, --input=INPUT_URL        Input URL
  -o, --output=OUTPUT_PATH     Output path
  -s, --size=SIZE              Maximum thumbnail size