How to show file extension on Windows 10?

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Valery Aloyants
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It is sometimes useful to consult the extension of a file before opening it, if only to know its type or to detect a questionable file downloaded from the Internet. By default, extensions are not necessarily displayed on Windows 10.

In this tutorial dedicated to teaching you how to organize your workstation on Windows 10, we explain how to display file extensions on Windows 10.

Enable Display of Known File Extensions in Windows 10

  1. In the taskbar, type Control panel.



  2. Launch the tool Control Panel.

  3. You should see this window appear. If the display is different, click View by > Category at the top right of the window.

  4. Click on Appearance and customization.

  5. Click on Show hidden files and folders.

  6. In the window that opens, scroll down the list and uncheck the box Hide extensions of files of known type.

File Explorer should now show the extensions of all your archives, including the most common ones. You can use the same Control Panel menu to customize the Explorer view down to the smallest detail.

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