Everyone is familiar with pdf files. When we download some documents or materials, we usually choose to download documents in pdf format. Because this type of file is very immutable, even if it is downloaded, the format will not be messed up. Of course, pdf has many other advantages besides this point. At the same time, many data files on the Internet will also have some watermarks and backgrounds. So how can we quickly add watermark to pdf? How can we better guarantee our copyright?

   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.

Now we have learned how to quickly add watermarks and backgrounds to PDFs. Are these methods very simple? Adding watermarks and backgrounds to pdf can not only protect our own rights and interests, but also effectively resist piracy, so everyone should pay attention to this.