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Format

NumPy Format

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Summary

Name
NumPy Format
Identifiers
  • PUID: fmt/2112
  • MIME: application/x-npy
Format type
Dataset
Description
The NumPy format is the standard binary format for saving NumPy arrays to disk. These formats preserve the exact data type (dtype), shape, and byte order of your numerical arrays, allowing you to save and load them without losing information.
Note
https://numpy.org/doc/stable/reference/generated/numpy.lib.format.html
File extensions
npy
Submitted by
Digital Research Alliance of Canada - FRDR / Alliance de recherche numérique du Canada – DFDR

Internal signatures

NumPy

Description
BOF; Offset: 0; Magic Bytes: .NUMPY

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
0
Byte Sequence
934E554D5059
Endianness
None

Changelog

  • V125

    Release date
    7 September 2026

    • Added format

      NumPy Format: Full entry added. Submitted by Digital Research Alliance of Canada - Federated Research Data Repository / Alliance de recherche numérique du Canada - Dépôt fédéré de données de recherche.

    • Added signature

      NumPy Format: Signature researched and samples provided by Digital Research Alliance of Canada - Federated Research Data Repository / Alliance de recherche numérique du Canada - Dépôt fédéré de données de recherche.