Turn your network name and password into a QR code that phones scan to join automatically — or read one back from an image. Everything runs in your browser; nothing is uploaded.
A Wi-Fi QR code carries a short text record in the WIFI: format. When a phone camera reads it, the operating system offers a one-tap prompt to join the network — no typing the name or password.
The encoded string looks like this:
WIFI:S:<network name>;T:<WPA|WEP|nopass>;P:<password>;H:<true>;;
S: the SSID, T: the security type, P: the password, H:true only if the network is hidden.\ ; , : " inside the SSID or password are escaped with a backslash. A value made entirely of hex digits is wrapped in quotes so parsers don't treat it as raw hex.nopass and the P: field is dropped. The string always ends with ;;.iPhones on iOS 11 or later and Android phones on version 10 or later read Wi-Fi QR codes natively from the camera. Older phones need a QR-scanner app that understands the WIFI: scheme. Most laptops cannot join a network from a QR code.
WPA covers WPA, WPA2 and WPA3 — pick it for almost every home or office network. WEP is a legacy, insecure option kept only for very old hardware. No password is for genuinely open networks and leaves the password out entirely.
Levels L through H add increasing redundancy, so the code still scans with smudges, poor light, or a small logo placed over the centre — at the cost of a denser pattern. M is a sensible default; raise it to Q or H only if you plan to print small or overlay a logo.
Anyone who photographs the printed code can recover the password and join. Put the code where only the people you intend can see it, and regenerate it after any password change.
Print the code on a card or wall so visitors join without you reading out a long passphrase. Ideally point it at a separate guest SSID that is isolated from your main network, and pair it with a strong random password.
Most modern phones can. iPhones on iOS 11 or later scan Wi-Fi QR codes straight from the Camera app, and Android 10 or later has the same built-in support in the camera and on the Wi-Fi settings screen. Older devices can still use the code with a free QR-scanner app that understands the WIFI: format.
The code holds your network name and password as plain text, so anyone who can photograph the printout can read the password and join. That is fine for a card left out for guests at home or in a cafe, but treat it like the written password: do not post it publicly online, and regenerate it if you change the Wi-Fi password.
No. The QR code is built entirely in your browser by a local JavaScript library. Your SSID and password are never sent to us, never logged and never stored, and the generator keeps working if you disconnect from the internet after the page loads. Decoding an uploaded QR image happens on your device too.