PC.net

.chm

File Type Compiled HTML Help File IconCompiled HTML Help File
File Format Proprietary (Microsoft)
Usage Open manually
Rank ★ ★ ☆  Average
Description

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.

Important: Some CHM files may be opened using a Web browser, while others can only be opened with a CHM editor or CHM viewing program.

Open With
Windows

IconMicrosoft HTML Help Executable

Updated 2007
Information from the PC File Extensions Reference
https://pc.net/extensions/file/chm
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