.CHM File Extension

File Type:
Compiled HTML Help File

Having trouble opening .chm extension? Don't panic! This page explains what chm files are as well as suggests programs you may use to open chm files. You can download these programs through this page.

What is a CHM file?

Chm file extension has Compiled HTML Help file type, developed by Microsoft, which is associated with the "web files" category.

Help documentation files saved in an HTML format with compression. Can include pictures, hyperlinks, and text. Windows and other programs use these files as an online help option. Some CHM files can be viewed in a Web browser, but for other, you might need a CHM viewer or a CHM editing program.

To learn how you can open the given file, read the information below.

chm file icon
File Type:
Compiled HTML Help File
Web Files

How to open CHM file?

Double click the chm file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .chm extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the chm extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the chm file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open CHM files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the chm file as well. Download Universal File Viewer for your OS.

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