Password-Protect a PDF
Add a password to your PDF so it cannot be opened without the secret you choose. This is the standard way to restrict access to contracts, statements, and personal records before emailing or archiving them. Unlike cloud tools, the encryption runs entirely inside your browser — your password and your document are never transmitted to a server, which removes the weakest link in most online protection workflows.
Choose files ordrag & drop here
.pdf · single file
Processed locally in your browser — your files never leave your device.
How to encrypt pdf
- Upload the PDF you want to protect.
- Type a strong password — use a mix of letters, numbers and symbols.
- Click "Encrypt PDF" and download the protected document.
Frequently asked questions
Is my password sent to a server?
No. Encryption happens locally in your browser, so neither the password nor the document ever travels over the network.
What makes a good PDF password?
Use at least 12 characters mixing upper and lowercase letters, numbers, and symbols. Avoid names, birthdays, and dictionary words that are easy to guess.
Can I remove the password later?
Yes. Use our Decrypt PDF tool with the correct password to produce an unprotected copy of the document whenever you need one.