Why is there a SmileOnMyMac logo on my PDF when I save it?
Documents saved by the PDFpenPro demo will be given this watermark. The only way to remove the watermark is to purchase a license to PDFpenPro (SmileOnMyMac Store) and register the application. When you open a watermarked document with a registered copy of PDFpenPro, the watermark will be removed automatically and you can simply save again to permanently remove it. Do not save watermarked documents using File->Print->PDF->Save as PDF… or the watermark will remain permanently as though printed to a physical printer.