PDF

PDF password protect

Add a password to your PDF to prevent unauthorised access.

Drop a PDF here or click to browse

Add password protection

100% private. All processing happens locally in your browser — no files or data are ever sent to a server.

How to use PDF password protect

01 Drag and drop your PDF file(s) onto the upload area, or click to browse
02 Configure any options (page range, output settings) as needed
03 Click the action button to process — your file downloads instantly

Frequently asked questions

Common questions about PDF password protect.

Is PDF password protect free to use?

Yes, PDF password protect is completely free. No account, subscription, or payment is ever required — just open the page and start using it.

Does PDF password protect upload my data to a server?

No. PDF password protect runs entirely in your web browser using client-side JavaScript. Your files, text, and data never leave your device, making it 100% private.

Can I use PDF password protect on my phone or tablet?

Yes. PDF password protect is fully responsive and works on all modern smartphones, tablets, and desktop browsers without installing any app.

Are my PDF files kept private?

Absolutely. PDF password protect processes your PDF entirely in your browser using pdf-lib, a client-side JavaScript library. Your files are never uploaded to any server.

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About PDF password protect

PDF Password Protect adds a password to your PDF to restrict access. Set a user password and optional permissions (printing, copying, editing). Uses pdf-lib for encryption entirely in your browser — your documents never leave your device. Useful for confidential documents, contracts, and sensitive reports before sharing.