HDF

File Format
Name	HDF
Ontology	Electronic File Formats Scientific Data formats HDF
Extension(s)	.hdf
MIME Type(s)	application/x-hdf

Summary

The Hierarchical Data Format (HDF) is a file format and associated APIs designed by the US NCSA for multi-dimensional datasets. Currently it has two main versions, HDF4 and HDF5, which are quite different in design, implementation, and API. Currently both are supported by the HDF Group, but HDF5 is generally considered to be technically superior. Another widely-used data format, netCDF-4, is based on HDF5.