Security

PDF security tools protect your documents from unauthorized access, modification, and privacy exposure. In an era where documents are routinely shared via email and cloud services, controlling who can view, print, or edit your PDFs is an essential part of document management.

Encrypting a PDF with a password uses industry-standard AES-256 encryption — the same standard used by banks and governments. You can set separate owner and user passwords, and fine-tune permissions to allow or block printing, copying, and editing. Password-protected PDFs can only be opened by people who have the correct password.

The Unlock tool works the other way: if you have a password-protected PDF that you own and know the password for, you can remove the password protection to make the file easier to work with and share internally. Removing metadata strips hidden document properties — author name, creation date, editing software, and revision history — that can inadvertently reveal private information when you share files externally.

Removing JavaScript from PDFs eliminates a potential security vector, since malicious PDFs sometimes use embedded scripts to exploit vulnerabilities in PDF readers. All security operations run entirely in your browser, so your sensitive documents are never transmitted to any external server.