pdf_password

Using PyPdf to overlay image on pdf
Requirements:
 pip install fpdf Pillow pypdf

Examples
* Specific page, the pages begin at zero
p = PDF("C://tmp/a.pdf", "C://tmp/w.pdf", "C://tmp/img.jpg")
p.watermark_page(3)

* All pages
p = PDF("C://tmp/a.pdf", "C://tmp/w.pdf", "C://tmp/img.jpg")
pdf.watermark_all_pages()