Protect PDF

About this tool

Encrypt your PDF with password protection using our free online tool. Set separate user and owner passwords with fine-grained permission controls — restrict printing, copying, or editing — and download the secured PDF instantly.

Key features

• Dual passwords

  Set a user password (to open) and an owner password (to manage permissions) separately.

• Permission controls

  Restrict printing, content copying, form filling, and document modification.

• Instant encryption

  PDF encryption is applied server-side and the protected file is available within seconds.

• No watermarks

  Your protected PDF is returned clean — no watermarks or modifications.

Frequently asked questions

What is the difference between user and owner passwords?

The user password is required to open the PDF. The owner password controls permissions like printing and editing — it can be set independently.

What encryption strength is used?

PDFs are encrypted using 128-bit RC4 encryption, which is standard for PDF security.

Can I restrict only specific actions?

Yes. You can individually allow or restrict printing, content copying, editing, form filling, and more.

Is the password stored on your servers?

No. Passwords and files are processed in memory and deleted after the operation — they are never stored.