PDF Tool
PDF Lock
Password protect your PDF files. 100% in-browser processing — nothing is uploaded.
Note: Browser-based PDF encryption is limited. This tool will generate a password and provide instructions. For full encryption, use the provided password with your PDF reader.
🔒 Your PDF never leaves your device. 100% in-browser processing.
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How to use this PDF Password Protector
Protecting your PDF with a password is simple. Start by uploading a PDF file using the drop zone above or by clicking to select a file from your device.
Enter a strong password and confirm it. The tool will generate a password protection file with instructions. Use the provided password with your PDF reader to encrypt your PDF file securely.
What this PDF password protector does
- ✓Password protection — Generate strong passwords to protect your PDF documents.
- ✓Password strength indicator — Visual feedback on password strength to ensure security.
- ✓Secure storage — Your password is never stored or transmitted anywhere.
- ✓100% in-browser — Your file never leaves your device for complete privacy.
- ✓No sign-up required — Completely free to use with no account needed.
- ✓Password confirmation — Ensure accuracy with password confirmation and matching check.
Common use cases
- •Protect confidential business documents with strong passwords
- •Secure personal documents like tax returns and financial statements
- •Add password protection to client deliverables and contracts
- •Secure sensitive legal documents before sharing via email
- •Protect employee records and HR documents
- •Add security to academic papers and research documents