A daily updated filename extension database!

HDX file extension

The table below provides useful information about the .hdx file extension. It answers questions such as:

  • What is the .hdx file?
  • What program do I need to open a .hdx file?
  • How can the .hdx file be opened, edited or printed?
  • How can I convert .hdx files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Delphi MultiHelp Index

HDX file is a Delphi MultiHelp Index. Embarcadero Delphi is an integrated development environment (IDE) for console, desktop graphical, web, and mobile applications.
HDX format description not yet available
Application: Delphi
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HDX aliases:
HDX related links:
HDX related extensions:
Delphi Project

Pascal/Delphi Source Code

Delphi Compiled Unit

Delphi Form

Delphi Package

Delphi Package Library

Borland Package Library

Borland Project Group

Delphi Component Resource

Delphi Option File

Other types of files may also use the .hdx file extension.

🚫 The .hdx file extension is often given incorrectly!

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

bdx, dhx, dx, gdx, hcx, hd, hda, hdc, hdd, hds, hdz, hex, hfx, hrx, hsx

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Sony Playstation 2 SCEI Instrument Set Data
Multidimensional Expressions Script
dBASE IV Multiple Index
Sharp X68000 Audio Data
VisionICE Flat Binary Downloadable
Poser Compressed Hand Data
WinDev HyperFileSQL Index
Houdini Digital Asset Library
JCAMP-DX Format Data
GAMS Data Exchange File

🔴 Can't open a .hdx 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .hdx file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .hdx file extension, write to us!

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Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
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