🔒 Protect PDF

Password protect PDF — free, fast, and private.

🔒

Drop PDF file(s) here

or click to browse

How to Protect PDF

Upload your file(s) by dragging and dropping or clicking the upload area above.

Click the button to process your files instantly in your browser.

Your processed file will download automatically. No signup needed!

Performance & Details

Uses AES encryption via pdf-lib. Password is applied locally — it never touches any server. Encrypted PDFs open in any standard PDF reader (Adobe, Preview, Chrome).

All processing uses pdf-lib (open-source). Files stay in your browser — zero server uploads. Last verified: May 2026.

Protect PDF — Available Nationwide

Protect PDF in Los Angeles, CA Protect PDF in San Diego, CA Protect PDF in San Francisco, CA Protect PDF in Houston, TX Protect PDF in Dallas, TX Protect PDF in Austin, TX Protect PDF in New York City, NY Protect PDF in Buffalo, NY Protect PDF in Rochester, NY Protect PDF in Miami, FL Protect PDF in Orlando, FL Protect PDF in Tampa, FL Protect PDF in Chicago, IL Protect PDF in Aurora, IL Protect PDF in Naperville, IL Protect PDF in Philadelphia, PA Protect PDF in Pittsburgh, PA Protect PDF in Allentown, PA Protect PDF in Columbus, OH Protect PDF in Cleveland, OH Protect PDF in Cincinnati, OH Protect PDF in Atlanta, GA Protect PDF in Augusta, GA Protect PDF in Savannah, GA Protect PDF in Charlotte, NC Protect PDF in Raleigh, NC Protect PDF in Greensboro, NC Protect PDF in Detroit, MI Protect PDF in Grand Rapids, MI Protect PDF in Warren, MI

Browse all US locations →

Protect PDF — Available Across Europe

Protect PDF in Dublin, IE Protect PDF in Cork, IE Protect PDF in London, GB Protect PDF in Manchester, GB Protect PDF in Berlin, DE Protect PDF in Munich, DE Protect PDF in Amsterdam, NL Protect PDF in Rotterdam, NL Protect PDF in Paris, FR Protect PDF in Lyon, FR Protect PDF in Madrid, ES Protect PDF in Barcelona, ES Protect PDF in Rome, IT Protect PDF in Milan, IT Protect PDF in Zurich, CH Protect PDF in Geneva, CH

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Need More?

Get unlimited access to all tools, batch processing, and priority support for just $5/month.

Go Pro — $5/month

Protect PDF — Frequently Asked Questions

What type of encryption is used?▼

We apply AES encryption, the industry standard used by banks and governments worldwide.

What happens if I forget the password?▼

There is no way to recover a forgotten password from an encrypted PDF. Keep your password in a safe place.

Can I set different permissions (print, copy)?▼

Currently we support open-password protection. Advanced permission controls are on our roadmap.

Will password protection slow down the PDF?▼

No — encrypted PDFs open just as fast as regular ones, just requiring a password first.

Is this tool suitable for legal or financial documents?▼

Yes — password protection adds a strong security layer for contracts, tax documents, and financial records.