HDX File

What are HDX files and how to open them

Are you having problems opening a HDX file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your HDX files.

What is a HDX file?

HDX files have multiple uses, and Extended HDI Disk Image is one of them. Read more about the other uses further down the page.

Extended HDI Disk Image

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open HDX files

Important: Different programs may use files with the HDX file extension for different purposes, so unless you are sure which format your HDX file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested five different HDX openers which you will find listed below.

Last updated: May 19, 2024

All known file formats using extension .HDX

While Extended HDI Disk Image is a popular type of HDX-file, we know of 2 different uses of the .HDX file extension. Different software may use files with the same extension for different types of data.

TMT Pascal Help System

We know that one HDX format is TMT Pascal Help System. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

These apps are known to open certain types of HDX files. Remember, different programs may use HDX files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about HDX file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.