Lock PDF

Protect sensitive documents with a password before sharing them.

🔒

Drop a PDF to lock

Note: browser-based PDF encryption adds a password barrier suitable for casual privacy. For legal-grade encryption (AES-256 with certificate signing), use a desktop PDF editor.

Why this tool

  • Protect private documents
  • Discourage casual access
  • Add a password barrier
  • Share sensitive files safely

How it works

  • Drop the PDF
  • Enter a strong password twice
  • Click Lock PDF
  • The protected PDF downloads