Sending a sensitive document over email without password protection is like leaving your front door unlocked. It only takes a moment to secure a PDF, and the peace of mind is worth it. Whether you are sharing tax returns, legal contracts, medical records, or business proposals, password protection ensures that only the intended recipient can access the content.
The PDF specification defines two distinct password types, and understanding the difference matters:
PDFly's Protect PDF tool makes the process straightforward:
PDFly uses AES-256 encryption, the same encryption standard used by banks, government agencies, and military communications. This is currently the strongest widely-available encryption algorithm. A properly chosen password with AES-256 is effectively unbreakable with current technology.
The strength of your PDF protection is only as good as your password. Follow these guidelines:
After protecting your PDF, share the password through a separate channel — a phone call, a text message, or a different messaging app. Never send the password in the same email as the PDF. This two-channel approach ensures that even if one communication is compromised, your document remains secure.
PDFly encrypts your PDF entirely in your browser. Your document and your password are never sent to any server. This means there is no third party that can access your protected file, no data breach risk, and no compliance concerns.
Open the Protect PDF tool and add password protection to your document in seconds. It is free, private, and works entirely offline.
