With the release of 2018.3, PSPDFKit Server added support for password-protected PDFs.
To access password-protected documents via the upstream API, add the
pspdfkit-pdf-password header to your API calls.
Please refer to our guide on API endpoints for working with documents for more detailed instructions on how to access password-protected PDFs documents.
Clients can access password-protected PDFs by using a JSON Web Token (JWT) that includes the
password claim, or by supplying the password when [opening or loading a document][password-protected pdfs guide].