I scanned handwritten notes, but the text is too gray and when I print it, it is difficult to read. I tried to adjust "contrast" by using many software (adobe acrobat, foxit, nitro pdf), but without success. Can you suggest me a way to reach the goal please?
P.S.: online I found ScanWritr which does what I want, but adds adv in the sheet.
EDIT no camera raw in filter menu in Photoshop




