---
type: lookup
id: xz-fd-37-7a-58-5a-00
asset: file-format-signatures
title: "FD 37 7a 58 5A 00 — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "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 |"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "FD 37 7a 58 5A 00"
offset: "0"
extension: "xz"
format: "XZ compression utility using LZMA2 compression"
unverified_fields: format, hex_signature
---
**Hex signature:** FD 37 7a 58 5A 00

**Offset:** 0

**Extension:** xz

**Format:** XZ compression utility using LZMA2 compression

> 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>