How can I password protect my PDF
We have a PDF Security API that can add owner and user password to your PDF documents. You can also add restrictions such as prohibiting others from editing the document etc.
You can check out a demonstration here https://pdf.co/pdf-password-security-api
Kindly explore our API docs to see the different features supported by our PDF Security API https://apidocs.pdf.co/32-pdf-password-and-security