File Extensions

The part of a computer filename that starts with a dot and is followed by three characters is called the extension. It usually tells your computer what kind of file it is, and what program is needed to open it. If, however, your computer meets a file extension it doesn’t understand, you’ll need to do some research to figure it out. Here are two sites that will help: FILExt and File Extensions.


Cite This Page

Feldman, Barbara. "File Extensions." Surfnetkids. Feldman Publishing. 18 Sep. 2007. Web. 2 Mar. 2015. <http://www.surfnetkids.com/tech/276/file-extensions/ >.


About This Page

By . Originally published September 18, 2007. Last modified September 18, 2007.



Internet Safety Parents Guide
Internet Safety Parents' Guide
Price: $14.08
Online Safety for Children and Teens on the Autism Spectrum: A Parent s and Carer s Guide
Online Safety for Children and Teens on the Autism Spectrum: A Parent's and Carer's Guide
Price: $14.13