If your scanner doesn't have the capability, this option will be unavailable.
If your scanner has that capability, you can select the Preview or scan images as separate files check box. Some scanners can save individual documents or photos placed on the scanner bed as separate files on Windows 10. In the preview area, drag the handles of the cropping tool to resize the image. You can crop an image before scanning it by clicking Preview in the New Scan dialog box.
▲ Back to the top ▲ Useful info from (c) Microsoft: