What is the function of adding watermark to PDF?

When making documents, we are actually very accustomed to adding some watermarks to the documents. This can not only clearly indicate the purpose of the documents, but also protect our documents from being stolen and protect our labor fruits to a certain extent. But many times it is only after the document is made that I forget to add the watermark. So to add watermark to PDF, how to add watermark to PDF? Let's take a look at the specific operation steps with me!

     Step 1: Search www.pdfasset.com in your browser and enter the home page of PDFasset

      Step 2: Find the "Watermark PDF" function on the home page, and click to enter the file upload page.

      Step 3: Click to upload the PDF file that needs to be watermarked, then select the watermark type, set the watermark format, etc., click "Start Adding", wait a few seconds after the addition is complete, and click "Download" to get the file.

Above I described the method of adding watermark to PDF. I wonder if you have learned how to add watermark after the document is created? PDF watermarks are very common, especially when uploading your own documents on the computer, adding watermarks has become the best way to protect the fruits of our labor.