docs: def main():
      """Main method."""
      args = parse_cmd_arguments()
      html_file = args.file
  
      try:
          json.loads(args.add_tags or '{}')
          json.loads(args.exc_tags or '{}')
      except ValueError:
          print('\033[91m' + 'Invalid json string: please provide a valid json '
                'string e.g {}'.format('\'{"img": "data-url"}\'') + '\033[0m')
          sys.exit(1)
  
      staticfied = staticfy(html_file, args=args).encode('utf-8')
      file_ops(staticfied, args=args)