PDF Tools
Protect PDF with Password
Add password encryption to PDF documents in your browser.
No uploadAES encryptionBrowser tool
PDF protection in your browser
This tool uses pdf-lib to add password protection to PDF documents using AES-128 encryption. All processing happens locally, so your files never leave your device. Remember your password - it cannot be recovered.
Questions
What encryption level is used?
The tool uses standard PDF encryption (AES-128) to protect your document.
Can I remove the password later?
You can use the Unlock PDF tool to remove password protection if you know the password.
Is the PDF uploaded?
No. Protection happens entirely in your browser.