For those unaware, you can try the preview pane in the Windows File Explorer by clicking on the “View” tab.

With PowerToys, Microsoft has been testing add-ons for File Explorer to extend the default capabilities of the preview pane.

As you can see in the above screenshot, Microsoft is planning to integrate Monaco editor’s file preview capability into the File Explorer’s preview pane.

This would allow you to preview nearly all popular text-related file formats in the File Explorer of Windows 11 or Windows 10.