A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...

This guide explains how to change the file extension in Windows 11. It also clarifies the distinction between file extensions and file types. Change a File Extension the Easy Way The simplest way to ...

One of the banes of modern working life comes about when trying to collaborate remotely with colleagues using different software. Mac users pick up a spreadsheet, presentation deck or word-processing ...