Which password protects opening?

The user/opening password is required to open the exported PDF. The owner password controls permissions; setting only an owner password does not require a password to open the file.

There is no recovery; store it safely.

Password-Protect PDF

Add a password to protect a PDF.

PDF file

Drag & drop a PDF here

Choose a PDF file (.pdf)

User password (opens the PDF)

Owner password (controls permissions)

Encryption

Allow after open (permissions)

Print High-res print Copy/Extract Accessibility extract Annotate Fill forms Assemble Modify other

Status

Note: This tool can’t unlock PDFs without the correct password. It only encrypts PDFs or changes permissions when you already have access.

Help & FAQ — Password-Protect PDF

How to use

Add a PDF.
Enter an opening password and optional owner password, then choose encryption and permissions.
Use Protect & Download or Protect & Share to create the encrypted PDF.

Use cases

Protect a report with a password.
Encrypt a PDF before emailing.

Tips & FAQs

Which password protects opening?: The user/opening password is required to open the exported PDF. The owner password controls permissions; setting only an owner password does not require a password to open the file.
Forgotten password?: There is no recovery; store it safely.

Formats & limits

Input: PDF
Output: password-protected PDF
Compatibility varies with very old PDF readers

Privacy

Processing happens in your browser. Download saves output locally; when available, Share sends it through your chosen app.

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Updated

12 October 2025