CNT File

What are CNT files and how to open them

Are you having problems opening a CNT 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 CNT files.

What is a CNT file?

CNT files have multiple uses, and Windows Help File Contents is one of them. Read more about the other uses further down the page.

Windows Help File Contents

Microsoft Windows uses files containing the .cnt file extension to index the help files used by the Windows operating system. These files can be created by the Microsoft Help Workshop application, a program used to develop help documentation for the Windows OS.

The actual help files used by this program are saved with the .hlp file suffix. The table of contents files that organize the HLP files are saved with the .cnt file extension. CNT files are optional files, and not all Windows HLP files have a CNT file associated with them.

How to open CNT files

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

Programs that open Windows Help File Contents files

Last updated: February 24, 2023

All known file formats using extension .CNT

While Windows Help File Contents is a popular type of CNT-file, we know of 2 different uses of the .CNT file extension. Different software may use files with the same extension for different types of data.

Painter 3D Contour Image File

We know that one CNT format is Painter 3D Contour Image File. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

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

Various apps that use files with this extension

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