Password protecting a pdf document in adobe reader

Structure of a PDF file? Sign up or password protecting a pdf document in adobe reader in to customize your list.


Join Stack Overflow to learn, share knowledge, and build your career. Structure of a PDF file? I’d like to use python to do this and I’ve found several libraries that are capable of doing what I want in some ways. But now after a few researches, I’m wondering what is the real structure of a pdf file, does anyone know if there is a spec or some explanations anywhere online?

You should know though that PDF is only about presentation, not structure. Parsing will not come easy.