PDF comparison is easy with Adobe Acrobat. The Compare Files tool helps you quickly and accurately detect differences between two versions of a PDF. You can compare documents in a side-by-side view or choose single page view to review all changes in your latest PDF document.
It lets you quickly compare text, images and graphics so you know exactly what has been changed from a previous version. With the handy highlight bar, each change is conveniently called out for you in the new document.