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Protect PDF with Password

Add a password to your PDF to prevent unauthorized access. Encryption happens in your browser.

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or click to select a PDF from your device

Encrypting PDF…0%

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Your PDF has been encrypted and is ready to download.

How To Use

How to Password-Protect a PDF

Select the PDF you want to protect with a password.

Enter and confirm your password. Choose which actions to permit.

Your protected PDF will require the password to open.

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PDFs are protected using AES-128 bit encryption via pdf-lib in your browser.

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Control printing, copying, and editing independently for each PDF.

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Use our Unlock PDF tool if you later need to remove the password.

FAQ

What encryption is used?

We use AES-128 encryption, which is supported by all modern PDF readers including Adobe Acrobat, Preview, and Chrome's PDF viewer.

Is my PDF password stored anywhere?

No. Encryption happens entirely in your browser. Your password and file never leave your device.

What happens if I forget the password?

There is no way to recover a forgotten password since it is not stored. Please keep your password safe.

Can I set different passwords for opening and editing?

The open password is required to view the PDF. Permissions (printing, copying, editing) can be controlled independently in the settings above.