Protect PDF with Password
Add password protection to your PDF files. Encrypt documents to prevent unauthorized access. Free, private, and secure — files never leave your browser.
100% Private
Your files and passwords are processed in your browser. Nothing is uploaded to servers.
Strong Encryption
Industry-standard AES-256 encryption to keep your documents secure.
Instant Results
Protect PDFs instantly in your browser, no waiting for server processing.
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Frequently Asked Questions
What type of encryption is used to protect my PDF?
PDFs are encrypted using AES-256 encryption, which is the industry standard for document security. This ensures your protected files are highly secure.
Can I open a protected PDF without the password?
No, once a PDF is password protected, you need the correct password to open and view the document. Make sure to remember or securely store your password.
Is my password stored anywhere?
No. Your password is only used during the encryption process in your browser. It is never sent to any server or stored anywhere. If you forget your password, there is no way to recover it.
Will password protection affect my PDF content?
No, password protection only adds a security layer to your PDF. The content, formatting, and quality of your document remain completely unchanged.
How strong should my password be?
For best security, use a password with at least 8 characters including uppercase letters, lowercase letters, numbers, and special characters. Avoid common words or easily guessable information.