Can I password-protect a PDF online?

Yes. Upload one PDF, set a user password and owner password, then export the protected file.

What is the difference between user and owner password?

The user password is needed to open the PDF. The owner password controls document permissions and administrative access.

Protect PDFs With A Simple Password Flow

Add password protection without opening a heavy editor, then export one secured PDF for controlled sharing.

Step 1

Load one PDF and set access passwords

Single PDF • up to 5MB

Drop your PDF hereUpload one PDF to protect it with user and owner passwords.

Step 2

Plan who can open the file and who can control it

Password to open the PDF

Share this with anyone who should be able to open the file.

Too short

User password

Password to control the PDF

Keep this private. It controls permissions and admin-level ownership.

Too short

Owner password

Protection summaryThe exported PDF will use AES-256 encryption. People need the user password to open it, while the owner password remains your private control key.

Step 3

Create the protected PDF

Check both passwords once before exporting. Losing the owner password can make future changes difficult.

Upload a PDF first to unlock export.