Part 1: The Simple Method to Darken a PDF What is the all-in-one method to darken a PDF, especially for scanned PDF files? When you need to adjust the contrast of a PDF text or make the PDF darker for printing, PDFelement is a versatile PDF editor that enables you to make the text...
If it is an option, the best course of action is usually to ask the person who scanned the document to rescan it using darker output settings. If this is not possible, you can try printing the PDF using darker output settings on your printer. It should come out at least somewhat darker...