HDK file format description

Many people share .hdk files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .hdk file can be edited, converted or printed with. On this page, we try to provide assistance for handling .hdk files.

1 filename extension(s) found in our database.

.hdk - HotDocs Registration File

The HDK data files are related to HotDocs. The HDK file is a HotDocs Registration File. HotDocs is a document assembly software package currently owned and marketed by HotDocs Limited.

Data files
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HotDocs Registration File related extensions:
HotDocs Answer
HotDocs Component File
HotDocs Answer Library
HotDocs Clause Archive
HotDocs Auto-Assemble File
HotDocs Auto-Install File

Naturally, other applications may also use the .hdk file extension. Even harmful programs can create .hdk files. Be especially cautious with .hdk files coming from an unknown source!

Can't open a .hdk file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .hdk file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

bdk, dk, hck, hd, hdl, hdm, hdo, hdu, hk, hsk, hxk, mdk, ndk, tdk, udk

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Giza Specifier HDL Data
Danish Language Info File
Borland Turbo Debugger Keystroke Recording Data
Nimbus 7 SAMS HSK Data
HAHTsite Client-side Image Map Project
MGS Hinge CK File

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you have useful information about the .hdk file format, then write to us!

DataTypes.net >> HDK file