Password Protect PDF Online Free

Add a password to any PDF instantly. Free, secure, no registration required.

Max file size: 100MB

Processed locally·✓ No registration· 30 seconds

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Protect PDF with Password — Free

Drop your PDF, set a password, and download the protected file. Anyone who tries to open it will need that password — works with Adobe Acrobat, Preview, browsers, and any PDF reader that supports encryption.

Uses standard PDF encryption recognized by every major PDF reader. Choose what's locked: opening the document, printing, copying text, or editing — restrict any combination.

Password setup runs in your browser. The PDF and the password you set never leave your device — we don't keep copies, don't see your password, and don't have a way to recover it if you forget. Save it somewhere safe.

Free protects up to 2 PDFs per day. Premium removes the limit and keeps your protected files for a year through Cloud History.

FAQ

Is it free?

Yes. First 2 PDFs per day, no account needed.

What if I forget the password?

We cannot recover it. Save it before downloading.

Is my file secure?

Processed locally in your browser. Never uploaded to our servers.

Want to remove a password from a PDF? Unlock PDF — coming soon.