Lock PDF with Password Online — Free PDF Password Protector

How to Lock a PDF with BharatPDF

1. Open the Lock PDF tool — The password protector workspace loads automatically on this page.
2. Upload your PDF — Click “Choose File” or drag your PDF into the tool.
3. Enter a password — Type your chosen password. Use a strong mix of letters, numbers, and symbols.
4. Click “Lock PDF” — The PDF is encrypted locally in your browser with no server access.
5. Download — Save the password-protected PDF to your device and share it securely.

Why Lock PDFs with BharatPDF?

Protecting PDF files with a password prevents unauthorised access to sensitive content such as legal documents, financial reports, contracts, and personal data. BharatPDF’s Lock PDF tool applies strong encryption directly in your browser, meaning your file is never transmitted to any server. This is essential when working with confidential business documents or personal records. Recipients will need the password to open the protected PDF in any PDF viewer.

• Strong AES encryption applied locally
• Protected PDF opens in any standard PDF viewer
• Your document never leaves your device
• Set both open password and permissions password