What Is a File Extension & Why Are They Important?

A file extension or suffix is the group of characters, usually 3-4 in length, after the period in a full file name. Also called a filename extension.

What is a file extension? Why does it matter? – Cowirrie Commentary

File Extension - an overview

What Is a File Extension & Why Are They Important?

Image File Extensions and their Uses - Fact Bites

File EXTENSION: HOW IT IS IMPORTANT?

Computer Awareness Important File Extensions List, PDF, Html

What are File Extensions and why are they important?

What is the purpose of a file extension in Windows? - Quora

TEMPLATE File - What is a .template file and how do I open it?

File Extension Handout