Note: We have included screenshots of Excel. However, if you want to make the change in Word or PowerPoint, you must follow the same steps. The list of file extensions will be different as per the app ...

Microsoft uses file associations to set default programs for opening different file types on all its operating systems. As a result, when you open a file, be it text, image, or document, on your ...

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 ...

Chris Capossela, who runs product management for the Office family of products, dropped by to see me to dribble out more details about the next version of Microsoft Office (currently dubbed "12"), ...

All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. There are a number ...

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 ...

Google is changing the way its browser handles PDF files, starting with the Chrome Canary channel. Citing security concerns, the company wants Chrome to open PDF files by default, bypassing any ...

An outline of the most important file formats for digital photographers and how best to use them. An outline of the most important file formats for digital photographers and how best to use them. When ...