QRCoderWi-Fi QR codes
Scan and Create a Wi-Fi QR Code on Android
Typing a 20-character Wi-Fi password on a phone keyboard is nobody's favourite task. A Wi-Fi QR code carries the network name, security type and password in one scan — and you can make one for your own guests in under a minute.
What is inside a Wi-Fi QR code
A Wi-Fi QR code is plain text in a widely supported format:
WIFI:T:WPA;S:CafeGuest;P:sunny-morning-42;;
T— security type (WPA/WPA2/WPA3 are written asWPA;nopassfor open networks).S— the network name (SSID).P— the password, in readable text.- An optional
H:truemarks a hidden network.
That last point matters: anyone who can photograph the code can read the password. Treat a Wi-Fi QR code exactly like a password written on paper.
Join a network by scanning
- Open QRCoder — or tap its Quick Settings tile — and point the camera at the code. Use the flashlight in a dim room.
- QRCoder shows the network name, security type and password as readable fields.
- Choose to connect. Android shows its own confirmation, so the network is only added when you approve it.
If someone sent the code as a photo or screenshot, import the image instead of using the camera — see scanning a QR code from a screenshot.
Create a Wi-Fi QR code for guests
- In QRCoder, create a new code and choose Wi-Fi.
- Enter the network name exactly as it appears (it is case-sensitive), the security type and the password.
- Save the code as an image or share it. Print it for a guest room, a rental or a small office.
- Test it with a second phone before printing.
Use a guest network. Most routers can run a separate guest network that cannot see your computers, printers and smart-home devices. Put that network on the printed code — not your main one — and change its password between long-term guests.
Android can share Wi-Fi too
Most Android phones can also show a QR code for the network you are connected to: open Settings → Network & internet → Wi-Fi, tap the network, then Share. That is handy for a one-off; a code created in QRCoder is better when you want to save, print or reuse it.
Troubleshooting
| Problem | Likely cause |
|---|---|
| Connects but no internet | Router issue or captive portal; open a browser to check for a login page. |
| "Incorrect password" | The code was made before the password changed; create a new one. |
| Network not found | Out of range, 5 GHz-only network on an older phone, or a hidden SSID. |
| Code will not scan | Glare or low light; turn on the flashlight or scan a photo of it. |
Frequently asked questions
Is it safe to scan a Wi-Fi QR code?
Joining a network is generally low risk, but only join networks you expect, such as your host's or a business you are in. QRCoder shows the network details and Android asks for confirmation before connecting.
Can people see my password in a Wi-Fi QR code?
Yes. The password is stored as readable text, so anyone who scans or photographs the code can read it. Use a guest network for printed codes.
Can I make a Wi-Fi QR code with QRCoder?
Yes. Choose Wi-Fi when creating a code, enter the network name, security type and password, then save the code as an image or share it.
Sources and further reading
How this article was created
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