Computer‎ > ‎How to‎ > ‎General‎ > ‎

Show File Extensions

If you want to know how to open a file, then you need to know the extension. Windows hides that from you by default. Let's unhide it really quick so you can know what type of file it is you are working on.


Windows XP

  1. Double Click the My Computer icon on your desktop.
  2. Choose Tools then Folder Options from the menu.
  3. Click the view tab.
  4. Uncheck "hide extensions for known file types"
  5. Click Apply then Click OK.
That's all there is to it! Know if you look at the file it should be have a . followed by a 2-4 character name. (Example: .doc)

Windows 7 and Vista

  1. Click "Start" button, then Settings, and then Control Panel
  2. Click "Folder Options"
  3. Click the tab from the choices at the top.
  4. Uncheck "hide extensions for known file types"
  5. Click Apply then Click OK.
That's all there is to it! Know if you look at the file it should be have a . followed by a 2-4 character name. (Example: .doc)

Windows 7 Folder Options

Comments