What do you mean by extension name of file?

What is file extension name?

The extension is a three- or four-letter abbreviation that signifies the file type. For example, in letter. docx the filename is letter and the extension is docx. Extensions are important because they tell your computer what icon to use for the file, and what application can open the file.

What is extension name example?

Extensions tell your computer which application created or can open the file and which icon to use for the file. ... Common file name extensions in Windows.ExtensionFormatdocxMicrosoft Word documentdotMicrosoft Word template before Word 2007dotxMicrosoft Word templateemlEmail file created by Outlook Express, Windows Live Mail, and other programs

Is an example of file extension?

A file extension (or simply "extension") is the suffix at the end of a filename that indicates what type of file it is. For example, in the filename "myreport. txt," the . TXT is the file extension.