| HTML Entity (dec) | � |
| HTML Entity (hex) | � |
| UTF-8 (hex) | 0xefbfbd / 0xef 0xbf 0xbd (3 bytes) |
| UTF-8 (dec) | 239, 191, 189 (3 bytes) |
| UTF-16-BE (hex) | 0xfffd / 0xff 0xfd (2 bytes) |
| UTF-16-BE (dec) | 255, 253 (2 bytes) |
| UTF-32-BE (hex) | 0xfffd / 0x00 0x00 0xff 0xfd (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 255, 253 (4 bytes) |
| C/C++/Java source code | "\ufffd" |
| Python source code | "\ufffd" |