Password Protect PDF — Free Online

Add password protection to your PDF files. 100% client-side — your files and passwords never leave your browser.

Drop your PDF here

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Frequently Asked Questions

How do I password protect a PDF?
Upload your PDF, enter a password, set permissions (printing, copying, modifying), and click "Protect PDF." Your encrypted file is ready to download instantly.
Is my PDF and password safe?
Absolutely. Everything happens in your browser — your PDF and password are never sent to any server. The encryption is performed entirely on your device.
What encryption does this use?
This tool uses standard PDF encryption compatible with all major PDF readers including Adobe Acrobat, Preview, Chrome, and Firefox.
Can I control what people can do with my PDF?
Yes. You can allow or restrict printing, copying text, and modifying the document. The password is required to open the file.
Can I remove the password later?
Yes, open the protected PDF with the password in any PDF reader, then save/export it without encryption to remove the password.

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