In short: Protect PDF locks a PDF with a password using AES-256 encryption, so only people with the password can open it.
Processed locally in your browser
Your files and text are handled entirely on your device using your browser. They are never uploaded to our servers.
Encryption runs locally in your browser with AES-256. Your PDF and password never leave your device.
How to use Protect PDF
3 quick steps. Most people are done in under a minute.
- 1
Upload a PDF file.
- 2
Enter a password (and confirm it) to protect the file.
- 3
Choose printing/copying permissions, then download your protected PDF.
Protect PDF features
- Strong AES-256 encryption
- Optional permissions to restrict printing and copying
- Encryption happens entirely on your device
- Works in any modern PDF reader
When to use Protect PDF
- Send bank statements, payslips or tax forms securely
- Protect contracts and confidential business documents
- Share medical or legal records with a password
About this tool
Lock a PDF with a password so only people you choose can open it. AES-256 encryption keeps the content confidential, and you can also control printing and copying permissions.
Protect PDF FAQ
How do I password-protect a PDF?
Upload the PDF, enter a password, optionally set printing and copying permissions, and download the encrypted file. Anyone opening it will be asked for the password.
How secure is the encryption?
Files are encrypted with AES-256, the same standard used by banks and governments. Use a long, unique password for the best protection.
Can FaaTools recover my password if I forget it?
No. The password never leaves your device and is not stored anywhere, so keep it somewhere safe.
Is it safe to use this tool with private PDF files?
Yes. Your PDF files are processed entirely in your web browser using JavaScript on your own device. Nothing is uploaded to FaaTools servers, so we never see, store or share your data — you can even disconnect from the internet after the page loads and the tool keeps working.