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 Are They Important?

Extensions of Excel Types of File Formats ( XLS, XLSX, XLSM, XLSB )

The Complete List of Document File Extensions for Developers

What Is a File Extension & Why Are They Important?

Header Files in C++: Composition of Header File, Types of Header Files

What are File Extensions and why are they important?

What is a File Extension?

What Is a File Extension & Why Are They Important?

What Is a File Extension & Why Are They Important?

What is the file extension for Excel - javatpoint