A hdf file extension is related to the Help Development Kit.

There are 2 other file types using
the HDF file extension!

empty icon.hdf - Hierarchical Data Format

empty icon.hdf - Amiga hard disk image

Detailed description

Software that open hdf file

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HDF file extension - Help document

What is hdf file? How to open hdf files?

File type specification:

Database file type icon Database file type

The hdf file extension is associated with the Help Development Kit, an app used to create DOS help databases, Windows help (WinHelp), OS/2 (IPF) and DESQview/X help source files.

The hdf file stores various data used for internal purposes of the Help Development Kit.

Mime types:
application/x-hdf

This hdf file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

The default software associated to open hdf file:

Help Development Kit  Microsoft Windows software

Help Development Kit is hypertext help database development kit that includes 2 help engines, a help compliler with built-in cross reference tool, and supports creation of DOS help databases, Windows help (WinHelp), OS/2 (IPF) and DESQview/X help source files.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .hdf file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .hdf file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open hdf file, edit hdf file, convert hdf file, view hdf file, play hdf file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with hdf file - Help document

Click on the software link for more information about Help Development Kit. Help Development Kit uses hdf file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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