How to display extensions of known file types in Windows 8

  
                                    

1. Click the “expand icon” button in the folder interface, as shown below. Or press “Ctrl+F1” hotkey to expand the ribbon;

2. Click on “View” in the folder menu, then click “change folder and search options>; Shown:

3. Click on the “View” tab to hide the extension of the known file type> this item is checked, click OK to display the known file type. extension name. As shown below:

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