# eXtensible Markup Language — file signature 00 00 00 3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20 at offset 0 after BOM

For eXtensible Markup Language, hex signature is 00 00 00 3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20; offset is 0 after BOM; extension is xml (UTF-32BE), verified against its source on 2026-09-22.

- **Hex signature:** 00 00 00 3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20 _(verified: appears in the quote below)_
- **Offset:** 0 after BOM _(verified: appears in the quote below)_
- **Extension:** xml (UTF-32BE) _(verified: appears in the quote below)_
- **Format:** eXtensible Markup Language _(verified: appears in the quote below)_

## What the source says

> 3C 3F 78 6D 6C 20 | <?xml␠ | 0 after BOM | xml (UTF-8 or other 8-bit encodings) | eXtensible Markup Language [29] [66] | 3C 00 3F 00 78 00 6D 00 6C 00 20 | <␀?␀x␀m␀l␀␠␀ | xml (UTF-16LE) | 00 3C 00 3F 00 78 00 6D 00 6C 00 20 | ␀<␀?␀x␀m␀l␀␠ | xml (UTF-16BE) | 3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20 00 00 00 | <␀␀␀?␀␀␀ x␀␀␀m␀␀␀ l␀␀␀␠␀␀␀ | xml (UTF-32LE) | 00 00 00 3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20 | ␀␀␀<␀␀␀? ␀␀␀x␀␀␀m ␀␀␀l␀␀␀␠ | xml (UTF-32BE) |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).