HPJ File

What are HPJ files and how to open them

Are you having problems opening a HPJ 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 HPJ files.

What is a HPJ file?

A .HPJ file is a Microsoft Help Compiler Project file.

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 HPJ files

We have identified one HPJ opener that is compatible with this specific type of HPJ file.

Programs that open Microsoft Help Compiler Project files

Last updated: February 24, 2023

Various apps that use files with this extension

These apps are known to open certain types of HPJ files. Remember, different programs may use HPJ 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 HPJ file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.