WCM Document — A .wcm file is a WCM Document. It is a document format used for word processing, spreadsheets, presentations or ebooks.
Quick facts
What is .wcm
A .wcm file is a WCM Document. It is a document format used for word processing, spreadsheets, presentations or ebooks.
In the mime-db registry it maps to application/vnd.ms-works. When serving .wcm over HTTP, set the Content-Type header as shown in Developer info below.
Related entities: it maps to application/vnd.ms-works — and is delivered over HTTP via the Content-Type header.
How to open .wcm files
Developer info
When served over HTTP, responses should set the following header:
Content-Type: application/vnd.ms-works
Common software that reads/writes .wcm:
Relation chain
Related extensions
Related MIME types
Common uses
How to edit .wcm files
How to create .wcm files
Frequently asked questions
Common options include Microsoft 365, LibreOffice, Adobe Acrobat. You can also open many of these files with built-in viewers or a browser.
Create a new file in any text editor or the app that owns the format and save it with the .wcm extension.
application/vnd.ms-works is the media type identifier used for .wcm files during network transfer (for example in the HTTP Content-Type header).
Sources & standards
Updated 2026-08-18
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