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 ...

Small File Explorer changes that remove daily Windows friction.

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 ...

Microsoft hides file extensions in Windows by default even though it's a security risk that is commonly abused by phishing emails and malware distributors to trick people into opening malicious files.

A bug in version 2409 of Microsoft 365 can cause Word documents to be deleted instead of saved, Microsoft has warned. The bug affects files that contain the # character or have file extensions in ...

A PDF — which stands for Portable Document Format — is an open standard document file extension created by Adobe. It has gained popularity in recent years because of the ease of use it affords the ...