Q: Programs? It is an HP scanner, does HP come with its own program?
A: Sort pictures according to their sizes. Determine what is the maximum flatbed do you had? Set scanner at 150 dpi at the maximum flatbed. Depends on how picture could be place on this size. Prepare a file folder that has a sufficient data disk. Make this as your target path. You can do preview only once, getting the maximum size. Make a mark, then scan, take the first batch and place second batch, just click only scan no more preview. it automatically scan pictures on your flatbed. HP has a program on this, but for me I prepare Photoshop for editing since it has save picture on 8 bit, and image sizes can be editable without losing your sharpness on the image. Unless you had set it on a low resolution.