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

or click to browse

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.

Related Tools

Password Protect PDF Online Free — Encrypt PDF | FileNaut