Protect PDF
Upload a PDF and set a password — anyone opening the file will be asked for it. The PDF is encrypted right in your browser, so the file and password never leave your device.
How to protect pdf
- 1
Step 1
Upload your PDF.
- 2
Step 2
Choose a password.
- 3
Step 3
Click Protect PDF and download the encrypted file.
Frequently asked questions
What encryption is used?
AES — the same password is required to open the PDF in any reader. Keep it safe; we can't recover it for you.
Are my files uploaded anywhere?
No. This tool runs entirely in your browser — your PDF never leaves your device and nothing is stored on a server.