File Extension

CDF File Format

Microsoft Channel Definition Format

CDF is a file extension for the Microsoft Channel Definition Format. The Channel Definition Format was an application of Extensible Markup Langugage (XML) that Microsoft proposed as a standard way to describe a Web site channel, consisting of a website or group of sites.

A CDF file identifies the page and subpages a user sees after selecting a channel on the browser.  

Channels were removed from Internet Explorer in version 7.

The CDF file extension is also associated with Netcdf graphic files.

 

Learn more about CDF files:

See questions and answers about Internet Explorer on IT Knowledge Exchange. 

This was last updated in August 2010
Editorial Director Margaret Rouse

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