Build a Wi-Fi QR code that most modern phones can scan from the camera app to join your network — no typing passwords for guests. Everything is generated locally.
The QR payload follows the informal Wi-Fi Network Config format used by Android, iOS, and most scanners:
WIFI:T:<auth>;S:<ssid>;P:<password>;H:<hidden>;;. Special characters
(\ ; , : ") in the SSID or password are escaped with a backslash. iOS 11+ and Android 10+
can scan Wi-Fi QR codes directly from the camera app.