Every café, clinic, coaching centre, homestay and office in India hears the same question many times a day: "What's the Wi-Fi password?" Spelling out a long password with mixed capitals and symbols is slow, and guests often type it wrong. A Wi-Fi QR code solves this. Guests point their phone camera at the code and join the network with one tap, without typing anything. This guide shows how to make a Wi-Fi QR code for free, how to print and display it, and how to keep your network safe.
How a Wi-Fi QR code works
A Wi-Fi QR code stores your network name (SSID), password and security type in a standard text format that phone cameras understand. When scanned, Android and iPhone offer to join the network. The code contains the password itself, so anyone who can scan the code can join, exactly as if you had told them the password.
Step-by-step: create your Wi-Fi QR code
- Open the QR Code Generator.
- Choose the type Wi-Fi network.
- Enter the network name (SSID) exactly as it appears in your phone's Wi-Fi list, including capital letters and spaces.
- Enter the Wi-Fi password exactly, with the correct case.
- Choose the security type: WPA/WPA2/WPA3 for almost all modern routers, WEP only for very old ones, or None for open networks.
- Tick hidden network only if your network does not broadcast its name.
- Download the QR code as PNG for printing or sharing, or SVG for sharp printing at any size.
- Test it: scan with an Android phone and an iPhone that are not already connected, before printing copies.
The code is generated in your browser. Your Wi-Fi password is not sent to our server.
Finding your network details
- SSID: shown in your phone's Wi-Fi list or on the sticker under the router. Many ISP routers in India use names like the provider name followed by numbers.
- Password: on the router sticker if you never changed it, in the router's admin page, or in your phone's saved networks. Many Android phones can display a saved network's password after you verify your screen lock; iPhones can show it in Wi-Fi settings.
- Security type: found in the router's wireless settings. If unsure, choose WPA/WPA2/WPA3.
Printing and displaying the code
- Size: at least 3 × 3 cm for scanning from close range; 5–8 cm for a table card or wall poster.
- Contrast: keep it black on white. Light colours or busy backgrounds reduce scanning reliability.
- Quiet zone: leave a white margin around the code.
- Label it: add "Scan to join Wi-Fi" and the network name, plus the password in text for laptops and older phones without QR scanning.
- Placement: reception desk, table tents, menu cards, the back of a homestay room door, a clinic waiting area, or a classroom notice board.
- Lamination: laminated cards last longer in kitchens and busy counters.
Security: use a guest network
A printed QR code is effectively a public password. Anyone who photographs it can join later, even from outside your premises if the signal reaches. To stay safe:
- Create a guest network on your router, separate from the network your billing computer, CCTV system, printers and personal devices use. Most modern routers support this.
- Enable client isolation on the guest network if your router offers it, so guests cannot see each other's devices.
- Change the guest password periodically, for example every few months, and print a new QR code.
- Never put your main office or home Wi-Fi code on a public wall.
- Change the router admin password from the default.
Uses beyond cafés
| Place | Idea |
|---|---|
| Home | Card on the fridge for visiting relatives and friends |
| Homestay or PG | Card in each room with house rules |
| Clinic or hospital waiting area | Guest Wi-Fi poster at reception |
| Coaching centre or school | Student network code on the notice board |
| Office | Visitor network code at the reception desk |
| Events and weddings | Code on the welcome board or table cards |
Other useful QR codes for small businesses
The same QR Code Generator creates codes for website links, phone numbers, email, SMS and plain text. A shop could display a Wi-Fi code, a code to its Google Maps review page and a code to its WhatsApp number together. For product labels and inventory, you can also create barcodes with the Barcode Generator.
For payment QR codes, use the official QR provided by your bank or UPI app. These are linked to your account; do not recreate them with a generic generator.
Troubleshooting
The phone scans but cannot connect
Usually the SSID or password has a typo or wrong capitalisation. Recreate the code and check carefully. Also check that the security type is correct.
The camera does not recognise the code
Print it larger, increase contrast, clean the camera lens and make sure the code is not distorted by a curved surface. On older Android phones, use Google Lens or the QR scanner in the camera's modes.
I changed the Wi-Fi password
The old QR code stops working. Generate and print a new one.
Does the QR code expire?
No. A Wi-Fi QR code stores the details directly and works as long as the network name and password stay the same.
Summary
Create a Wi-Fi QR code with the exact network name, password and security type, test it on two phones, print it large and clear with a label, and use a separate guest network to keep your main network safe.
Try it now: QR Code Generator is free to start and works on mobile and desktop.
Open QR Code Generator