WiFi QR code generator

WiFi QR codes are not URLs

The payload is a semicolon-delimited key/value string — WIFI:T:WPA;S:MyNetwork;P:secret;; — from a convention that predates any standard for it. There is no scheme registry entry and no RFC; phones simply recognise the shape.

The escaping rule nobody implements

Because ; and : are structural, any of \ ; , : " appearing in your SSID or password has to be escaped with a backslash. A network called Café; Guest or a password containing a colon breaks a naively concatenated payload — and it breaks silently: the code scans, and the phone tries to join a network with a truncated name.

Hidden networks

A network that does not broadcast its SSID needs the hidden flag, or the phone will scan the code, look for the network, not see it, and give up. If your code works at home but not at the office, this is usually why.

Print it at level H

These codes end up taped to walls, printed on table cards and laminated. They get scuffed, curled and photographed at an angle. Error correction is fixed at the highest level here for exactly that reason — the extra density costs nothing on paper.

Your password stays in this browser

The QR code is generated by JavaScript on this page. Nothing is uploaded, so the password does not appear in anyone's server logs, including ours. That is worth checking rather than trusting — the network tab will show no requests.