A daily updated filename extension database!

HH file extension

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

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

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

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

✅ HTML Help Header File

HH file is a HTML Help Header File. Microsoft HTML Help is the standard help system for the Windows platform. By default, an .hh file is created when the help project is compiled in Help Builder.
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
HH aliases:
HH related links:
HH related extensions:
Windows Help File

Hypertext Markup Language Document

Compiled HTML Help

HTML Help Table of Contents

HTML Help AutoIndex

HTML Help Project

HTML Help Stop Words

Microsoft Sharepoint Site Template

HTML Help Collection

Microsoft Sharepoint Web Part Description

✅ C++ Header File

HPP file is a C++ Header File. C++ is a general-purpose programming language. It is a statically-typed free-form multi-paradigm language supporting procedural programming, data abstraction, object-oriented programming, and generic programming.
Application: Visual C++
Mime-type: text/plain
Magic number: -
Magic string: -
Sample: -
HPP aliases:
hh, hxx
HPP related links:
HPP related extensions:
Assembly Source Code

C Source Code

C++ Source Code

Visual C++ Dialog

Fortran Source Code

C Header File

Microsoft Visual Studio Workspace Options

Pascal/Delphi Source Code

Visual C# .NET Class

Visual Studio Resource Script

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

🚫 The .hh file extension is often given incorrectly!

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

bh, gh, hb, hg, hj, hm, ht, hu, jh, mh, nh, th

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

BlakHole Archive
Teli Fax Image
WinHelp Context ID
Grasshopper 3D Document
NetHack Game Configuration File
HyperTerminal Settings
Harwell Boeing Sparse Matrix
China Academic Journals NH Document
Humminbird Track Data
Mercurial Data

🔴 Can't open a .hh 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 .hh 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 .hh 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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