Utilize the HDF5 high performance data software library and file format to manage, process, and store your heterogeneous data. HDF5 is built for fast I/O processing and storage.

The HDF5 format is designed to address some of the limitations of the HDF4 library, and to address current and anticipated requirements of modern systems and applications.

The HDF Group is the developer, maintainer, and steward of HDF5 software. Find more information about The HDF Group, the HDF5 Community, and other HDF5 software projects, tools, and services …

This is an introduction to the HDF5 data model and programming model. Being a Getting Started or QuickStart document, this Introduction to HDF5 is intended to provide enough information for you to …

3 days ago · The award recognizes HDF5’s role as foundational scientific infrastructure—supporting data management in disciplines ranging from astrophysics and climate science to healthcare, …

Apr 10, 2025 · HDF5 uses a "file directory" like structure that allows you to organize data within the file in many different structured ways, as you might do with files on your computer. The HDF5 format also …

Nov 10, 2025 · 30% faster opening and 25% faster closing of virtual datasets. Reduced memory overhead via shared name strings and optimized spatial search algorithms for virtual datasets. Full …

3 days ago · HDF5 consists of a file format for storing HDF5 data, a data model for logically organizing and accessing HDF5 data from an application, and the software (libraries, language interfaces, and …

This download location is intended for new users of HDF5 or those looking for the most recent production version. Older versions of HDF5 can be downloaded from the Support site.

HDF5 lets you store huge amounts of numerical data, and easily manipulate that data from NumPy. For example, you can slice into multi-terabyte datasets stored on disk, as if they were real NumPy …