A CHM help file is a type of file format for providing help documentation and user manuals for software applications. CHM stands for “Compiled HTML Help”, which means that the help file is a compiled collection of HTML pages, images, and other multimedia resources that are designed to be accessed through a user interface.
CHM help files are commonly used in Windows-based software applications, and they are accessed through a dedicated viewer program called the HTML Help Viewer. They can be created using the HelpNDoc help authoring tool.
In order to generate documentation in CHM format, you must first download and install Microsoft's HTML Help Workshop compiler. This free compiler allows you to use HelpNDoc to generate CHM help files on Windows.