PDF annotations & Stamp

  • Hi,


    We are a small company who develop desktop applications.

    We are looking for a tool to do these tasks:

    • Open a pdf document
    • Determine if the document is locked for modifications (electronic signatures and locked)
    • If it is no locked:
    • Add a small picture/stamp to it and a few lines of text.
    • Much better if possible to determine position, size, color, font, etc. of this added elements.


    Everything from inside our own applications; using activex or a DLL or API/REST or something similar.


    Thanks in advance.

    Regards.