How to Password Protect a PDF File\n\nProtecting sensitive contracts, tax forms, and medical records with a password prevents unauthorized access.\n\n---\n\n## How to Encrypt a PDF\n\n1. Open **[Protect PDF](/protect-pdf)**.\n2. Upload your document.\n3. Set a strong password.\n4. Click **Encrypt PDF** and download your protected file.\n\nAll encryption happens locally — your document never leaves your device.\n\n---\n\n## Related Tools\n- [Protect PDF](/protect-pdf)\n- [Unlock PDF](/unlock-pdf) – Remove passwords when needed.\n- [Edit PDF](/edit-pdf) – Make edits before encrypting.
Frequently Asked Questions
Q: What encryption does iPDFDesign use for PDF protection?
A: iPDFDesign applies AES-256 encryption locally in your browser — the industry standard for document security.