To add your watermark to your PDF files, you can use the free tool available on Mrephrase. Just go to the site and search for the watermark icon and click on it. Or to go directly to the site in the address bar of your search browser.The site will open and select and drop the PDF files that you want to add watermark to PDF. Next, select the type of watermark. It can be a text or image watermark that is your watermark. If you want to place a text watermark, type in the text, and it should not exceed 80 characters. If it's an image, select the image. Next enter the placing layer that can be over the PDF content or below the PDF content. Now select the watermark position. The choices are top, middle, and bottom. Now select the watermark side. Let's say you have selected to place the watermark at the bottom; you also need to select the side; the choices are the center, right and left. Click on the Apply watermark icon and your watermark will be placed on your PDF files.
This utility to place watermarks on PDF files is the easiest tool to use. You don't have to use free watermark software for windows 7 or free watermark software for mac, in case you are a Mac user.
Searching and using free watermarks download will take up space on your device and whenever an update is released, you will have to install it. So why go through all this hassle when you have a free tool available which will do the job online.