How to Make a Wi-Fi QR Code Guests Can Scan to Connect

A Wi-Fi QR code stores your network name, password and security type in a standard text format that phone cameras recognize. Guests scan it and tap "Join," with no typing and no spelling out a 16-character password. You can make one in under a minute, print it on a card or sign, and it keeps working for as long as your network name and password stay the same.

This walkthrough covers a real setup, a café guest network, from creating the code to printing it so it scans reliably.

What's actually inside a Wi-Fi QR code?

Unlike a link, a Wi-Fi QR code doesn't point anywhere online. It contains a short piece of text in a format that iOS and Android cameras understand:

WIFI:T:WPA;S:CafeGuest;P:espresso-2026;;

• T is the security type (WPA, WEP, or nopass for an open network).
• S is the network name (SSID).
• P is the password.
• An optional H:true; marks a hidden network.

Some characters have special meaning in this format: backslash, semicolon, comma, colon and double quote. If your network is called Bistro;Guest, it must be written as S:Bistro\;Guest. The Emojar generator adds those escapes automatically, which is one of the most common reasons hand-made Wi-Fi codes fail.

Step by step: creating the code

1. Open the QR Code Generator and set Content type to Wi-Fi network.
2. Enter the Network name (SSID) exactly as it appears in your phone's Wi-Fi list. It's case-sensitive and spaces count.
3. Enter the Password.
4. Choose Security: WPA/WPA2/WPA3 for virtually all modern routers, WEP only for very old equipment, or None (open) for networks without a password.
5. Tick Hidden network only if your router doesn't broadcast its name.
6. The code updates live in the preview. Test it now with your own phone before printing anything: open the camera, point it at the screen and confirm it offers to join the right network.

The code is generated entirely in your browser, so your Wi-Fi password isn't sent to a server, and there's no redirect link that could stop working later.

How do you print it so it scans every time?

Open Design & size to adjust the output. Here's what each setting does for print.

Download SVG for print. SVG is a vector format, so it stays perfectly sharp on a table tent or an A3 poster. Use PNG for screens, slides and messaging apps. Size (128–1024 px) sets the PNG resolution; for print, the SVG's size doesn't matter.

Pick the physical size by scanning distance. A common rule of thumb is that a code can be scanned from about ten times its width. A 3 cm (about 1.2 in) code on a table card works from arm's length; a sign by the door that people scan from 2 meters away needs to be about 20 cm (8 in) wide.

Keep the quiet zone. The blank border around the code helps the scanner find it. The Quiet zone (margin) slider runs from 0 to 8 modules (a module is one small square). The QR specification calls for 4, so increase it from the default of 2 if the code will sit close to other graphics, text or a busy background.

Choose error correction for the environment. QR codes contain redundant data so they can be read even when partly damaged:

Level	Recovers up to	Use when
Low	~7%	Clean screens, tiny codes
Medium (default)	~15%	Most printed signs
Quartile	~25%	Laminated cards, outdoor use
High	~30%	Codes with a logo on top, rough handling

Higher levels make the pattern denser, so print a little larger if you choose Quartile or High.

Keep contrast high. You can set any Foreground and Background color, but a dark code on a light background scans most reliably. Pale-on-pale combinations, such as light gray on white, cause most "it won't scan" complaints.

A few practical considerations

• The password is readable to anyone who scans it. That's the point for guests, but don't put your main home network's code on a public window. Many routers support a separate guest network; use that.
• Changing the password breaks the code. Because the details are embedded directly, you'll need to make and print a new one. Static codes never expire on their own.
• Add a fallback line of text under the code, such as "Network: CafeGuest / Password: espresso-2026", for guests with older phones.
• Need a strong but typeable guest password? A random word phrase from the Passphrase Generator is much easier to read off a sign than a jumble of symbols.

The same tool also makes codes for links, plain text, email, phone calls and SMS. If someone hands you a code and you want to see what's in it before acting on it, the QR Code Scanner reads it from a photo or screenshot.

FAQ

Do iPhones and Android phones both support Wi-Fi QR codes?

Yes. The built-in camera app on current iPhones and most Android phones recognizes the WIFI: format and offers to join the network.

Why does my phone see the network but fail to connect?

Usually the password or security type is wrong. Recheck capitalization, and make sure you didn't pick WEP for a WPA network. Regenerate and test again before reprinting.

Can I put my logo in the middle?

The generator doesn't add logos, but if you overlay one in a design tool, set error correction to High and keep the logo small, then test with several phones.

Ready to make your guest sign? Create a Wi-Fi QR code now.