Add a password so only people with it can open your PDF. The file is encrypted on your device — nothing is uploaded, and we never see your password.
Encryption is RC4/AES standard PDF security. We can't recover the file if you forget the password — keep it safe.
Password-protect a PDF so only people with the password can open it. The file is encrypted right in your browser — nothing is uploaded, and your password never leaves your device, so it works even offline once the page has loaded.
No. The PDF is encrypted entirely in your browser and neither the file nor the password ever leaves your device, so we never see either one.
Yes, it's completely free with no sign-up. Just open the page, add your PDF, and set a password.
Yes. It runs in any modern mobile browser — pick a PDF, set a password, and download the protected file the same way as on desktop.
There's no recovery. Because the encryption happens locally and we never store your password, a forgotten password means the file can't be reopened — keep it somewhere safe.
It applies standard PDF password security (RC4/AES), so the protected file opens with the password in any standard PDF viewer.
One PDF at a time. Load a file, protect it, then choose another to protect the next one.