Encrypt your PDF with a password to keep sensitive data confidential.
Password-protecting a PDF adds a layer of security that prevents unauthorized access to sensitive documents. Whether it's a legal contract, financial report, or personal record, a password ensures only the intended recipient can open and read the file.
Lawyers protect confidential client documents before sharing via email. Accountants lock financial statements sent to clients or auditors. HR managers secure offer letters and salary information. Anyone sharing sensitive information in PDF format benefits from password protection.
Choose an owner password to restrict editing, copying, and printing — or a user password that requires a code to open the file at all. Encryption happens locally in your browser using pdf-lib — no password is ever transmitted to a server.
Your files never leave your browser. No account required, no server uploads — just fast, local processing. This is what it means to protect PDF with password without uploading.
Prevent unauthorized access to sensitive information.
Passwords and documents are never sent to our servers.
Apply passwords to documents in seconds.
Upload your PDF, enter a strong password, then download the locked PDF. Keep the password safe—there’s no recovery if you forget it.
There is no way to recover a lost password. Please ensure you keep a record of the password you set.
We apply standard PDF encryption metadata. For maximum security, always use a strong, unique password.
Have a question, feedback, or feature request? We'd love to hear from you.
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