A daily updated filename extension database!

Details of the .hpj file extension

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

  • What is the .hpj file?
  • What program do I need to open a .hpj file?
  • How can the .hpj file be opened, edited or printed?
  • Where can I find the specifications for .hpj?
  • Which MIME-type is associated with the .hpj extension?
  • How can I convert .hpj files to another format?
  • What are other, similar filename extensions to .hpj?

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

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

.hpj file extension details

Windows Help Project

Windows Help Project .hpj file icon
HPJ fil is a Microsoft Windows Help Project.
Category: Project files
Application: Visual Studio
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HPJ aliases:
HPJ related links:
HPJ related extensions:
Windows Help Content

Windows Global Index File

Windows Help File

Compiled HTML Help

Answer Wizard Index

HTML Help Table of Contents

Windows Help Project

Compressed HLP File

MS Help 2 Project Attribute Definition

MS Help 2 Project Collection Definition

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

.hpj file extension error

The .hpj file extension is often given incorrectly!

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

hj, hpk, pj, mpj, hlj, gpj, phj, tpj, hpi, hph

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

HP Graphic Language Document
Habanero-Java Source Code
C64 Art Studio Image
HPack Compressed Archive
Tropico 3 Game Data
Minitab Project
Windows Help Project
Project64 Saved State File
jGRASP Project
Grapher Project
open .hpj file

Can't open a .hpj 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 .hpj file association, check the FAQ.

.hpj file extension

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 .hpj file extension, write to us!

Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
This page is available in the following languages: Český Deutsch English Español Suomi Français Magyar Italiano 日本語 Nederlands Norsk Português Român Русский Svensk 中文