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 ...

Every file that we have saved on our computers has a particular extension. The file extension is added at the end of the filename followed by a dot (.). It tells the operating systems about the ...

It’s been several years since Microsoft introduced a new document format in its Office 2007 suite called .Docx, but still, many people seem to wonder what .docx file is and how to open, read, and edit ...

Ernie Smith is a former contributor to BizTech, an old-school blogger who specializes in side projects, and a tech history nut who researches vintage operating systems for fun. With so many emerging ...

February 9, 2012 Add as a preferred source on Google Add as a preferred source on Google Windows' Save As dialog can be a little annoying. If you want to use a certain file extension, you have to pick ...

In the Mac OS it is possible to change the default program the operating system will use to open a file when you double-click on it. After you have changed this file association, though, you may want ...