PDF Watermark Pro is the best PDF Watermark creator software which can batch watermark PDF files by adding text or image to PDF on PC/laptop. It can add text or image watermark to PDF with customized settings, such as Font Size, Color, Opacity, Rotation, Page Range and more; add your custom text or image from local disk to PDF documents in 3 simple steps and add and insert text or image to multiple PDF files at one time.