Here’s a nifty trick for getting a file preview in Windows 7.  Select an image or document in File Explorer and press the Alt + P keys.

https://i2.wp.com/imgsrv.worldstart.com/images/ct-images/2017/03/file-explorer-no-preview.jpg?w=616

Now you’ll get a preview pane for the file.

https://i0.wp.com/imgsrv.worldstart.com/images/ct-images/2017/03/file-explorer-with-preview.jpg?w=616

The pane will remain turned on until you press Alt + P again to turn it off.

~ Cynthia