Well, file extensions are kind of like labels for your computer. Sometimes files are given the wrong file extension (label) ...

which will rename all the file extensions in a specific folder and all sub-folders at once. To learn more about these steps, continue reading. First, you need to open Notepad on your computer.

On computers and mobile devices, file extensions are the suffixes that apps append to filenames. When you see an item like "document.docx" for example, the .docx extension tells the computer and ...

In fact, even the computer's desktop is a special kind of folder that displays its contents across the screen (see desktop). Files are identified by a short "extension" following a period at the ...

An extension to file your tax return doesn't extend the ... return to verify your identity (you can e-file the form on your computer or have a tax professional do it for you).