I have pdf file. I want to add watermark in every page. I want to do it using javascript, or using library. How i do that?
i know one of managing pdf file, its called jsPDF. But i dont know how to use it to import existing pdf file, and add watermark.
So, the result is a new pdf file with watermark in every page.
Example add watermark online in this link.
Edit : That is not answer my question, because i need to import existing pdf file. How?