Download Qtrac DiffPDF 6 full version program free setup for Windows. Qtrac DiffPDF 6 Overview This is a Windows graphical user interface (GUI) application for comparing two PDF files. This program shows pairs of pages from the two PDFs compared with any differences highlighted. Comparisons can be made based on the text regardless of layout or appearance (which accounts for fonts, colors, layout, diagrams, images, etc.). You may also like Read More …