Opening an HND File

The HND file type is primarily associated with HelpNDoc.

HND	File extension: HND
	File type:	database file

What is an HND file?

HND files mostly belong to HelpNDoc. The HND files are specialized files that serve different functions depending on their origin.

HelpNDoc Database: A large group of these files is a SQLite database used by HelpNDoc to store help documentation and project details. These files organize text, images, and links in a structured format. To open them, use the HelpNDoc application. More details can be found on the HelpNDoc website.

Medical Imaging: Some HND files contain imaging data used within Varian systems. They store data relevant to radiation therapy planning and are read by tools such as Varian Eclipse or ARIA. More information is available at the Varian website.

Bridge Deal Record: Another variation holds data for a single Bridge card game deal. These files support software like Handviewer or HandBridge by recording the deal details. More info can be found on the BridgeBase website.

FilExt.com notes: Each type uses its own internal format. Use the software that matches the file’s origin to view or edit its contents. If the file’s purpose is unclear, inspecting the header with a text or hex editor may help determine its source.

How do you open HND files?

You need a suitable software like HelpNDoc to open an HND file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your HND file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a HND file directly in the browser:. Just drag the file onto this browser window and drop it.

Online HND Text Viewer

Choose your .hnd file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert HND files:

HelpNDoc
See the previous paragraphs to learn more about the main application. HND files are often referred to as HelpNDoc databases because this type of file is primarily created or used by this software.
Hallo Northern Sky (HNSKY) (Deep Sky Database File) by Han Kleijn
Hallo Northern Sky or HNSKY is a free planetarium program for windows with 26000 deep sky objects and all stars to magnitude 12 and with the original GSC CD's, GSC-ACT or the USNO UCAC2 to magnitude 16. The identifying characters used for this association are - Hex: 48 4E 53 4B 59 20 44 45 45 50 53 4B 59 20 44 41 54 41 42 41 53 45 20 4C 45 56 45 4C 20, ASCII: HNSKY DEEPSKY DATABASE LEVEL .
HelpNDoc (Project File) by IBE Software
HelpNDoc lets the user write and manage his documentation from a full featured help authoring environment. It generates standard Windows CHM help files, WEB based documentation, PDF and Word documents from a single source. This file format is classified as Archive.

HND file extension format:

A file format defines how the data in the file is structured. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. File extension, signature and file format must match; otherwise errors will occur when the file is opened. So a detailed analysis of a file is vital in order to determine the format and the associated program. Our analysis of the HND files produces the following result:

HND is not that commonly used as a file extension. This file type is primarily used by a single program. However, the following two file formats are common:

80% of all HND files are based on the popular SQL file format. An SQL file contains a lightweight SQLite database, widely used in application development for storing application related data. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. The average file size is 3 MB with most files being between 640 KB and 31 MB in size. This file type is based on cutting-edge technology. Certain words are almost always found in the files, such as SQLite format 3. Files like these have the following tags: manual, help, user, guide, geoportal, sampvoice, builder, sistema and stack.
6% of all HND files start with the magic bytes VARIAN_VA_INTERNAL_HND_1.0, which are always the first bytes of this file format. They consist of illegible, cryptic characters. The files are often between 1 MB and 1.4 MB in size. The keywords VARIAN_VA_INTERNAL_HND_1.0 are typical for these files. An example of a file name is Proj_00000.hnd. These files can be linked to frame.

The remaining 14% of all HND files are different files with different signatures, the following 3 formats can be found: NONE. If you want to find out what your HND file contains, drag and drop it onto this page.

Technical Data for HND File Extension

File classification:

Database

Identifier:

Hex: 48 4E 53 4B 59 20 44 45 45 50 53 4B 59 20 44 41 54 41 42 41 53 45 20 4C 45 56 45 4C 20, ASCII: HNSKY DEEPSKY DATABASE LEVEL (provided by TrID database)

Related files:

hnd, chm, pbn, lin, rar, hns, sav, sqlite, db, dcm

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: HelpNDocFile
EXEFile: %ProgramFiles%\_BB\HelpNDoc\helpndoc.exe

an hnd database file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with HND files

Associate the HND file extension with the correct application.
Update your software that should actually open database files. Because only the current version supports the latest HND file format. Search, therefore, e.g. on the manufacturer website after an available HelpNDoc update.
To make sure that your HND file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .HND file online - secure, fast, and no downloads needed.