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Informations about the HHC filename extension and the file formats associated with it

We collected the information you should know about the .hhc filename on this page. If you were sent a(n) .hhc file in an e-mail, but you don’t know what to do with it, then you can find help here. We strive to suggest free, open-source applications that are available to everyone for the file formats.

1 filename extension(s) are in our database

.hhc - HTML Help Table of Contents

The HHC file is a Development file, which is connected to the HTML Help Table of Contents according to our registry. With the adequate settings, the HTML Help Table of Contents (.hhc) files can be opened or converted with the help of Microsoft HTML Help.

Format description:
HHC format
Microsoft HTML Help
Magic string:
- / -
Related links:
Related extensions:
HTML Help Index
HTML Help Project
HTML Help Stop Words

Important! Programs other than the ones listed above may also use the .hhc file extension. Even harmful programs can create files with the .hhc extension to store data in them. Always be careful with .hhc files coming from unknown sources. Don’t open executable files that arrived in mails, even if you know the sender.

The .hhc file can’t be opened on your computer?

If the program necessary for opening the .hhc file is installed properly on your computer, then the quickest and simplest way to open the .hhc file is to double-click on the file’s name. If that doesn’t work, then the right software probably isn’t installed on your computer.

While opening the .hhc file, you may receive an error message from the associated application, this can be caused by the following:

Incorrectly given .hhc extension

The .hhc filename extension can be given incorrectly sometimes. The cause of the error could be a mistake or a simple typo. We found the following incorrectly given filename extensions that are the most frequent in the case of .hhc files.

ghc, thc, hyc, hnc, hhs, hh, hch, hbc, mhc, htc, hmc, hhd, hgc, hc

Maybe you’re not even looking for the .hhc file extension?

It’s possible the the file’s extension was given incorrectly. Below, we list some filename extensions that are similar to the .hhc extension. It’s possible that the one you’re looking for is among them.

Adobe RoboHelp Visual Basic Constant Map
MPLAB Harmony Configuration File
HTML Help Header File
SQL HyperBac Compressed Archive
Therion Configuration File

Associated applications

The Windows operating system stores information about the applications associated to the file extensions in the registry database. The associations can be queried or modified in the Command Prompt window with the "assoc" command.

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We gladly accept application suggestions, but our primary goal is to suggest reliable, open-source applications that can be freely distributed to the users.

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