Acrobat Reader has built-in accessibility features to fine-tune background and text settings Learn how to darken a PDF file for reading, printing, or adjusting the contrast on a PDF. Find out five workable methods to make PDFs darker with PDFelement, Adobe Acrobat, Photoshop, printer, and online tools. Locate the Background Color ” option and click the button next to it. The Extracts texts from PDF with the OCR algorithm to make them appear darker. Select Preferences from the It will reveal a