What does it mean about watermarking? How do I create a watermark? How to watermark documents for PDF? How to create an image watermark? How to create a text watermark? Add watermark to online PDF files How can I change the color, font, style, and watermarking of a PDF? Watermarking PDF on Android and iPhone: PDF Watermarking — An App for Android and iPhone Watermarking PDF on Android and iPhone is a simple desktop application that can also do PDF formatting in both Android and iOS. With a quick click on your PDF document, you can get watermarked. Watermarking PDF on Android and iPhone is fully customizable from the basic to the more artistic. You can set watermarking options such as font, color, size, format, padding and so on. You can also add your logo and add the title in the file content area of your file. Furthermore, you can also add watermark as your comments.