How to Make a WiFi QR Code So Guests Join Without Typing the Password

What a WiFi QR code actually is

A QR code is just text drawn in a scannable shape. For Wi-Fi, that text follows a simple standard format that phone cameras recognise: WIFI:T:WPA;S:YourNetworkName;P:YourPassword;;. When a camera app reads text shaped exactly like this, it does not display it as text — it offers to join the network instead. That is the whole trick. There is no magic inside the pattern beyond one correctly formatted line, which means any honest QR code generator — including ours — can make one. No account, no app, no server involved.

The format, piece by piece

Copy the pattern below and replace the placeholders with your own details:

WIFI:T:WPA;S:YourNetworkName;P:YourPassword;;

• T is the security type. Nearly every home router today uses WPA or WPA2 — write WPA. For an open network with no password (a public hotspot), write nopass and leave the P part out entirely.
• S is the network name, exactly as your router broadcasts it. Capitals and spaces matter: “HomeWifi” and “homewifi” are two different networks.
• P is the password, exactly as you would type it.
• The line ends with two semicolons. Keep both.
• Hidden network? If yours is not broadcast, add H:true before the final semicolons.

Two formatting traps break most failed codes:

1. Special characters. If your network name or password contains a semicolon, colon, comma, quotation mark or backslash, put a backslash directly before it (\; \: \, \" \\). This single rule is the one people miss most.
2. Stray spaces. One accidental space at the start or end of the line can stop the phone recognising the format — paste carefully.

Make yours in under a minute

1. Open our free QR code generator.
2. Type your Wi-Fi line into the text box in the format above — for example WIFI:T:WPA;S:CoffeeHouseGuest;P:freshbeans2026;; (with your own network name and password, of course).
3. Generate and download the PNG. Pick the 512 or 1024 px size if you plan to print it.
4. Test it with your own phone camera before printing — if it offers to join the network, the code works.
5. Print it and put it where guests will see it: the fridge door, the guest-room bedside table, the café counter.

The honest part: a WiFi QR code is a shared secret

A WiFi QR code is convenient precisely because it hands out your password — so treat the printout like a password. Anyone who photographs your code can join your network later, and a static code can never be revoked or made to expire. That is not a flaw in the method; it is the deal. Three rules keep it sane:

• Print it where your guests are, not where the street is. A code taped in the window is a password taped in the window.
• Businesses: use a separate guest network. Most routers can create one in a few minutes — keep your private network’s password off any printed code.
• When too many people know the password, change it and make a fresh code. It takes sixty seconds.

One genuine advantage of making it here: our QR code generator builds the code entirely inside your browser. The password you type never travels to a server, is never stored, and never passes through anyone else’s hands. And because the code is static, it never expires and keeps working even if this website ever went offline.

When the camera scans but will not connect

• Re-check the network name’s exact spelling and capitalisation against the router.
• Confirm the security type: try WPA first, and only use WEP for genuinely old routers.
• Hidden network? The H:true flag is required — without it, the phone cannot find the network.
• Camera shows the text instead of a join button? Open the phone’s Wi-Fi settings — many include a QR scanner built into the network list itself.