I want a software for cleaning up an Adobe PDF document scanned
My questions is about PDF documents.
I have some in my computer, and I want to modify them a bit. One is an old book scanned, but on some pages there are stains, or they are a bit yellow and burned by a cigarette.
How can I modify the documents so they look good?
Can you please provide me with a program for cleaning up an Adobe PDF document?
I would like something easy to use because I am no expert in PC.