Handytool
PDFFreeRuns locally

Protect PDF

Password-protect a PDF in your browser. Add encryption so the file can't be opened without your password, then download the protected copy.

.pdf

About the Protect PDF

Handytool's Protect PDF tool adds a password to your document so only people with the password can open it. The file is encrypted right in your browser, meaning the original and the password never leave your device. It's a private, no-account way to lock down contracts, statements, and anything else you need to share securely.

Protect PDF features

  • 01

    Real encryption

    The PDF is encrypted with your password, so it can't be opened in any reader without it.

  • 02

    Confirm to avoid typos

    Enter your password twice so you don't accidentally lock the file with a password you didn't mean to set.

  • 03

    Password stays local

    Everything runs locally in your browser — your file is never uploaded to a server. Your password is never transmitted.

Protect PDF FAQ

What happens if I forget the password?
There's no recovery — the encryption is real, so a forgotten password means the file can't be opened. Store your password somewhere safe.
Will the password be required in every PDF reader?
Yes. The protected file prompts for the password in any standard reader, including browsers, Acrobat, and macOS Preview.
Is my password sent to a server?
No. Everything runs locally in your browser — your file is never uploaded to a server. Encryption happens entirely on your device.
Can I remove the password later?
Yes — use the Unlock PDF tool with the password to create an unprotected copy.

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