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 ...

In this post, we will show you how to change the file type extension on Windows 11/10. Every file on our PC has a file type. For audio files, it might be MP3; for documents, it might be Docx or pdf; ...

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 the ...