I have several documents that I need to combine into a single pdf. I know that I can do this with Preview. However, it would be really nice if I could add page numbers to the resulting pdf, as well as headers and/or footers on each page.
Is this possible using pre-installed or freely available software on OS X? (Just being able to add page numbers would be great; being able to add a header as well would be perfect.)
I'm using Mountain Lion in case that makes a difference.