docs: def is_image(name, exts=None):
      """return True if the name or path is endswith {jpg|png|gif|jpeg}"""
  
      default = ['jpg', 'png', 'gif', 'jpeg']
      if exts:
          default += exts
  
      flag = False
      for ext in default:
          if name.lower().endswith(ext):
              flag = True
              break
      return flag