Password Protect PDF Online for Free
Password Protect PDF – Encrypt PDF Free Online
Sensitive documents need protection. This tool adds password encryption to your PDF so only people with the password can open, print, or copy it. Choose between a simple open password or advanced permission controls. Everything happens in your browser — your password is never stored.
How it works
Upload the PDF
Choose the document you want to protect. Review that it is the final version before adding a password.
Set a strong password
Use a password that is hard to guess and store it somewhere safe. Avoid reusing account passwords.
Download the protected PDF
Open the file once to confirm the password works before sending it to anyone.
Frequently asked questions
About Protect PDF
Protect PDF adds a password to a document before you send or store it. This is useful for bank statements, tax files, contracts, private forms, invoices, and identity documents that should not open casually if forwarded or saved in the wrong place. A PDF password is only as strong as the password you choose and how you share it. Avoid using names, birthdays, company names, or the same password you use elsewhere. Send the password through a different channel from the PDF when the document is sensitive. Password protection helps with privacy, but it is not a complete access-control system. Anyone with the password can open the file, save a copy, or share it onward.
Updated June 2026: Added practical password guidance for statements, contracts, shared forms, and the difference between protection and true access control.