How to Make a Wi-Fi QR Code So Guests Can Connect Instantly
By the UtilityNest team · · 5 min read
"What's the Wi-Fi password?" "It's on the router. Capital T, then 7, no, the other way round, then... hang on, is that a zero or an O?" Every visit, every guest, every time. Meanwhile the password on the sticker is sixteen random characters, because that is what the internet provider printed.
A Wi-Fi QR code ends this. Guests point their phone camera at it, tap the notification, and they are on your network. No spelling, no typos, no squinting at the back of the router.
The short version: open the QR Code Generator, choose Wi-Fi, type your network name and password, leave the security type on WPA / WPA2 / WPA3, and download the code. Scan it with your own phone before you print it.
Step by step
- Open the QR Code Generator and choose the Wi-Fi type at the top.
- Enter the network name (SSID) exactly as it appears, including capitals and spaces.
- Enter the password.
- Pick the security type. Almost every home and office router uses the default, WPA / WPA2 / WPA3; WEP and No password are there too. Switch on Hidden network if your network does not broadcast its name.
- Under Design, keep dark on light, leave the quiet zone at 2 or more, and optionally add a logo.
- Download SVG for printing or PNG for screens and messages.
The code is generated in your browser, so your Wi-Fi password is not sent anywhere.
What is inside a Wi-Fi QR code
There is no website involved. The code simply holds a short line of text in a standard format that phones understand, something like:
WIFI:T:WPA;S:Hillside Guest;P:T7kq-meadow-42;;
T is the security type, S the network name, P the password. When the camera reads it, iPhone and Android both offer to join that network.
A worked example: the holiday rental
A small rental with a guest network called Hillside Guest and a 15-character password.
- Make the Wi-Fi code, add the house logo in the middle (error correction switches to High automatically so it still scans), download the SVG.
- Drop it into the welcome card design at 4 cm wide, with "Scan to join the Wi-Fi" underneath and the network name and password printed in small text for laptops.
- Test with one iPhone and one Android phone from arm's length before printing twenty copies.
Guests photograph the router sticker, mistype a 0 for an O, and message you at 11 pm.
Guests scan the card on the fridge and are online in five seconds.
Codes that never expire
Many QR websites make "dynamic" codes that route every scan through their own short link, and the code stops working when a free trial ends. The codes made here are static: your details are stored directly in the pattern, so they work forever, need no account, and nobody tracks the scans. The flip side: if you change your Wi-Fi password, you need a new code. Make it in a minute, reprint, done.
Set up a separate guest network on your router (most have the option) and make the QR code for that. Guests get internet, your own devices stay on a network they cannot see, and you can change the guest password whenever you like without touching anything else.
Printing it so it scans first time
- Size: at least 2 cm (0.8 in) wide for anything held in the hand; 3 to 5 cm for a card on a table or fridge. Bigger for a poster people scan from across the room.
- Contrast: dark code on a light background. Light codes on dark backgrounds fail on some phones, and the generator warns you when colors are too similar or inverted.
- Quiet zone: keep the white border around the code. Cropping it off is the most common reason a nice-looking code scans slowly.
- SVG for print: it is a vector, so it stays sharp at any size. If a design or office app will not take SVG, SVG to PNG renders it as a large, crisp PNG.
Already on Wi-Fi? Phones can share it too
Many Android phones can show a QR code for the network you are connected to: open Wi-Fi settings, tap the network and look for Share or a QR icon. iPhones can share a Wi-Fi password with nearby Apple devices in your contacts. Both are handy in the moment; a printed code is better for a home, office or rental where people come and go.
Other useful QR types
The same generator can make a Contact card (vCard) that adds your name, number and email to someone's phone, plus Email, Phone and SMS codes, and of course plain links. For a link code on a flyer, keep the URL short; shorter links make simpler patterns that scan from further away.
Where to put the code
Somewhere guests naturally look: on the fridge, by the router, in a frame in the guest room, on the café counter next to the menu, or in the welcome book of a rental. Add one line of text such as "Scan to join the Wi-Fi" so people know what it is for, and print the network name underneath for laptops, which usually cannot scan.
Quick answers
Is it safe to put my Wi-Fi password in a QR code?
Anyone who scans it can join, exactly as if you told them the password. Put it where you would happily write the password: inside the home, at the café counter, in the rental welcome pack. Not on a window facing the street.
Do iPhones scan Wi-Fi QR codes?
Yes, with the built-in Camera app. Tap the banner that appears to join.
PNG or SVG?
SVG for printing and design apps, PNG for sharing on screens or in documents.