.CHM File Extension
File TypeCompiled HTML Help File
This file is saved in a binary format, which requires a specific program to read its contents.
What is a CHM file?
Help documentation compiled and saved in a compressed HTML format; may include text, images, and hyperlinks; viewable in a Web browser; used by Windows and other programs as an online help solution.
NOTE: Some CHM files may be opened using a Web browser, while others can only be opened with a CHM editor or CHM viewing program.