I've searched for methods such as the following, but they don't work. import zlib from base64 import b64decode input_base64 = "c0gtS8zRcEivysxLy0ksSdVISixONT0JT01Nzk9JVCJD/APDomON6hIS7K0SE2xSEw1TTIyidXU1LQGA=" decode = b64decode(input_base64) zlib.decompress(decode, -zlib.MAX_WBITS) Continue reading...