---
type: lookup
id: hdf5-h5-89-48-44-46-0d-0a-1a-0a
asset: file-format-signatures
title: "89 48 44 46 0D 0A 1A 0A — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "Data stored in version 5 of the <https://en.wikipedia.org/wiki/Hierarchical_Data_Format> Hierarchical Data Format ."
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "89 48 44 46 0D 0A 1A 0A"
offset: "0, 512, 1024, 2048, ..."
extension: "hdf5 h5"
format: "Data stored in version 5 of the <https://en.wikipedia.org/wiki/Hierarchical_Data_Format> Hierarchical Data Format ."
unverified_fields: extension, hex_signature, offset
---
**Hex signature:** 89 48 44 46 0D 0A 1A 0A

**Offset:** 0, 512, 1024, 2048, ...

**Extension:** hdf5 h5

**Format:** Data stored in version 5 of the <https://en.wikipedia.org/wiki/Hierarchical_Data_Format> Hierarchical Data Format .

> Data stored in version 5 of the <https://en.wikipedia.org/wiki/Hierarchical_Data_Format> Hierarchical Data Format .

Source: <https://en.wikipedia.org/wiki/List_of_file_signatures>