If you've scanned a document with your scanner or phone and have the image as a JPG file, it's often useful to convert that image to a PDF. Using Adobe Acrobat, you can even automatically process text ...

Q: I use an HP Envy Photo 6255 printer with my new Apple iMac desktop. When I scan a plain black and white document and save it to my desktop via the printer, it always comes over in a photo format.