.chm CHM document
Documents & office
| MIME type | application/vnd.ms-htmlhelp |
|---|---|
| Description | CHM document |
| Acronym | CHM – Compiled Help Modules |
| Category | Documents & office |
Frequently asked questions
What is a .chm file?
A .chm file is a “CHM document” (MIME type application/vnd.ms-htmlhelp). CHM stands for Compiled Help Modules.
How do I open a .chm file?
With an office suite: LibreOffice (free, Windows/macOS/Linux) opens most document formats, as do Microsoft Office or the vendor’s own app.
How can you tell a genuine .chm file?
No fixed signature at the start of the file is registered for this format; it is recognised mainly by its extension. On Linux and macOS, file --mime-type example.chm shows the guessed type.
Which MIME type belongs to .chm?
The MIME type is application/vnd.ms-htmlhelp. In the Apache web server: AddType application/vnd.ms-htmlhelp .chm; in nginx: types { application/vnd.ms-htmlhelp chm; }.