1] Keep preview images for individual Office documents Open the file (Excel, PowerPoint, Word) for which you would like to add a thumbnail Microsoft has named the feature as Thumbnail and not Preview.

The icons for Word, Excel, PowerPoint, and OneNote files share some of the visual elements with the ones for the apps themselves, specifically the colored square with the app's corresponding ...

Click the "Picture" icon, designated by a mountain landscape icon. After you select "Format Picture," on a PC, the below dropdown menu will appear. On a PC, this "Format Picture" menu will appear.