We often see people put a watermark on pictures on the web to prevent others from claiming ownership of their intellectual properties. Likewise, with PDFs we have many use case it is beneficial to put a watermark or annotate some text on your PDF document to let people know the work is yours. Of course, another way to protect your work is to Password Protect Your PDF, we can also help you with that.
How do we easily add some annotation on our PDFs? We make this process extremely simple. All you need to do is specify the text you want to put on, then select the setting e.g. Light Green Solid Text Behind Your Page's Text, or Red Outline Text On Top Of Your Page (this works particularly well if you have graphics). Feel free to experiment with different settings see what comes out best for your particular PDF.
Give it a try. Use the below form and submit your PDF file. Don't forget to verify your email address is correct so the result PDFs will reach you.