How to Add Page Numbers to PDF in Preview? If you have any question, please let me know. If you have any feedback or question, please let me know. Thank you. I am a professional designer and I have over 25 years of experience designing and working with PDF files. I will be happy to help in any way you need. Please contact me, and we will take our time and make something out for you. In general, I recommend you not to use the Adobe-built PDF viewer for Windows.