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 ...

Another day, another cool thing you can do with Alfred. This time it’s updating a text file of your choice, without having to leave Alfred’s friendly text input window. It’s done with an extension ...