Use a different owner password if you want separate control over PDF permissions.
This Add Password to PDF tool helps you lock a PDF file with an open password in your browser. It is useful when you want to share bills, forms, assignments, certificates, reports, or private documents with basic access protection.
How to add a password to a PDF
Upload your PDF, enter a strong password, choose the PDF permissions, and click Add Password. The protected PDF is created locally in your browser, then you can download the new password-protected PDF file.
Why use password protection for PDF files?
A password-protected PDF helps prevent casual opening, copying, printing, or editing of sensitive files. For best security, use a long password with uppercase letters, lowercase letters, numbers, and symbols.
Privacy note
The conversion runs in your browser. Still, always keep your password safe, because a lost PDF password may be difficult or impossible to recover.