Windows/Linux only: Firefox extension OpenXML Viewer opens Microsoft Word 2007 DOCX files directly in your Firefox browser. Granted, Gmail and Google just started converting DOCX files to HTML for ...

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 ...

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 ...