SeQR

End-to-end encryption packed into a QR code.

Encrypt text on your device with AES-256-GCM or ChaCha20-Poly1305 and an Argon2id-derived key. Share it as a QR code, scan it back to decrypt. Nothing ever leaves your device.

Privacy policy Contact

🔐 Local-first

No accounts, no cloud sync, no analytics. The encryption runs entirely on your device.

📱 Multi-part QR

Longer messages are split across several QR codes and reassembled automatically when scanned.

🔑 Optional key file

Add a key file on top of your password for two-factor encryption.

📄 PDF export

Generate a printable PDF with 1, 2 or 6 QR codes per page.

Your data never leaves the device

No data collection, no third-party SDKs, no network calls — works fully offline.

Read the full privacy policy →