# FD 37 7a 58 5A 00 — File format magic numbers

For FD 37 7a 58 5A 00, offset is 0; extension is xz; format is XZ compression utility using LZMA2 compression, recorded from its source on 2026-08-03.

- **Hex signature:** FD 37 7a 58 5A 00 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0
- **Extension:** xz
- **Format:** XZ compression utility using LZMA2 compression _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> ý7zXZ␀ | 0 | xz tar.xz | <https://en.wikipedia.org/wiki/XZ_Utils> XZ compression utility using <https://en.wikipedia.org/wiki/Lempel–Ziv–Markov_chain_algorithm> LZMA2 compression |

## Source

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

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).