Protect PDF
Add password protection to a PDF file. Secure your documents with encryption.
Drag & drop your PDF here
or click to browse — max 50MB
Note: This applies basic PDF password protection via pdf-lib. For bank-grade encryption, use a dedicated server-side solution.
How to Protect PDF
- 1Upload the PDF file you want to protect by dragging it in or clicking to browse.
- 2Enter a strong password and confirm it in the second field to avoid typos.
- 3Click "Protect PDF" and download your password-protected PDF.
Frequently Asked Questions
What level of encryption is applied?
This tool uses pdf-lib to apply password protection, which provides a standard level of PDF encryption. For bank-grade or enterprise-grade encryption, consider a dedicated server-side solution.
Can I use any password?
Yes, you can use any combination of letters, numbers, and symbols. A longer, more complex password provides better security.
What happens if I forget the password?
There is no way to recover a forgotten PDF password. Make sure to store your password in a safe place, such as a password manager.
Are my files sent to a server?
No. All processing happens entirely in your browser. Neither your file nor your password is ever sent to any server, ensuring complete privacy.
Can I remove the password later?
Yes. Use the Unlock PDF tool on this site. Simply upload the protected PDF and enter the correct password to remove protection.