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 ...

A file extension is a suffix that is added to the end of a file name after a dot. It is usually two to four letters long. File extensions help Windows and other operating systems to know the standard ...

When we talk about file types, we talk about files containing data in a specific format for use by a particular program or programs. Windows Explorer lists file types in its Type column. For example, ...

The default setting for Windows is to not display a file's extension, which is the last period in a file name followed by 2 or 3 letters. Therefore, when viewing files in Windows you would only see ...

Managing files on an iPhone has become significantly easier with recent updates to iOS, particularly with the introduction of the ability to change file extensions directly within the Files app.

File extensions are a necessary evil. Most of the time, you want those extensions to stay out of sight, but occasionally it's useful to expose the extensions. If you're creating a batch file or a ...

Microsoft has added a feature on the File Explorer Options or Folder Options ribbon and a Windows mini window, allowing the user to enable or disable the file extensions’ visibility in the File ...

Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development. David ...

Microsoft plans to expand the list of file extensions that are banned in Outlook for the web (previously known as Outlook Web Access (OWA)). The list, which previously included 104 file extensions, ...