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...
place the PDF into the doc, then duplicate the layer and use the blending mode Multiply, which punches up the text while still maintaining the quality. If it is still too dark, you can dupe and multiply the duped layer to create a double layer. ...