Password Protect a PDF Document

For most purposes, use a password that is at least 12 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and special characters. Avoid common words, phrases, or easily guessable information like birthdays or company names. A strong password like 'C0ntr@ct$3cur!ty2024' provides excellent protection against brute-force attacks. The password strength is especially important because PDF encryption uses the password as the key — a weak password undermines the encryption strength.

Yes, you can remove the password from a protected PDF at any time using pdfprivately's unlock tool, as long as you know the password. Simply upload the password-protected PDF, enter the password to unlock it, and download the unrestricted version. This is useful when you need to share a document with someone temporarily or when the document no longer requires protection.

pdfprivately uses 256-bit AES encryption, the strongest encryption standard available for PDF documents. This is the same encryption standard used by governments and financial institutions worldwide. The encryption is applied using the pdf-lib library running entirely in your browser — your file and password never leave your device.