h5json

Specification and tools for representing HDF5 in JSON.

Introduction

This repository contains a specification (as BNF grammar and JSON Schema), and a package for working with HDF5 content in JSON. The package CLI utilities can be used to convert any HDF5 file to JSON or from a JSON file (using the specification described here) to HDF5.

The package is also useful for any Python application that needs to translate between HDF5 objects and JSON serializations. In addition to the utilities provided, the package is used by the HDF Server (a RESTful web service for HDF5), and HDF Product Designer (an application for planning HDF5 file content).

Websites

Main website: http://www.hdfgroup.org
Source code: https://github.com/HDFGroup/hdf5-json
HDF Forum: https://forum.hdfgroup.org/c/hsds
Documentation: https://hdf5-json.readthedocs.org

Reporting bugs (and general feedback)

Create new issues at http://github.com/HDFGroup/hdf5-json/issues for any problems you find.

For general questions/feedback, please post on the HDF Forum.

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Provenance

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Publisher: release.yml on HDFGroup/hdf5-json

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Statement:
- Statement type: https://in-toto.io/Statement/v1
- Predicate type: https://docs.pypi.org/attestations/publish/v1
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- Sigstore transparency entry: 2691256490
- Sigstore integration time: Sep 2, 2026
Source repository:
- Permalink: HDFGroup/hdf5-json@f4284058b7bbc8bfd5500e810e174ba875a3e970
- Branch / Tag: refs/heads/master
- Owner: https://github.com/HDFGroup
- Access: public
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- Runner Environment: github-hosted
- Publication workflow: release.yml@f4284058b7bbc8bfd5500e810e174ba875a3e970
- Trigger Event: workflow_dispatch