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Protect / Unlock PDF

Security

Encrypt a PDF with a password, or remove a known password from a protected PDF. All processing stays in your browser.

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Drop files here or click to browse

🔒 100% Private

Files never leave your browser. No upload to any server.

⚡ Instant

Processing runs locally on your device. No queues, no waiting.

🆓 Free & Open Source

No signup, no watermarks, no limits. MIT-licensed code.

Frequently asked questions

How strong is the encryption?

PDFs are encrypted with AES-256 (industry standard).

Can I unlock a PDF I forgot the password to?

No. You must know the password — this tool does not crack passwords.

Are my files uploaded?

No. Encryption and decryption run entirely in your browser.