Protect PDF
Lock your PDF with a password and control printing and copying. Encryption happens locally, so your document stays private.
Drop your PDF here
or
How to protect a PDF
- Upload the PDF file you want to protect.
- Enter a user password that will be required to open the document.
- Optionally add an owner password; if you leave it empty the user password is used.
- Click Protect PDF and download your encrypted file.
FAQs
Is my password stored anywhere?
No, encryption happens entirely in your browser, and your password never leaves your device.
What do the user and owner passwords do?
The user password is needed to open the file, while the owner password controls permissions such as printing and copying.
What restrictions are applied by default?
Printing is allowed at high resolution, while modifying and copying are disabled.
Can I still open the file with any PDF reader?
Yes, the protected PDF uses standard encryption and works with most modern PDF software.
Related Tools
Why use Protect PDF?
Use Protect PDF to lock a confidential file with a password before sharing it, so only the people you choose can open it. Encryption is applied in your browser with pdf-lib, and your document is never uploaded to a server.
- Lock a confidential file with a password before emailing or uploading it.
- Restrict opening, printing and copying of client or company documents.
- Add a password to personal records before storing them in shared storage.
Tips and Limits
The tool encrypts your PDF with AES-128 encryption right in your browser, and you can set both a user password to open the file and an optional owner password to control printing and copying. Because encryption happens locally, there is no recovery service — if you forget the password, the file cannot be opened.