How to share guest Wi-Fi with a QR code.
Create a network code, test it, and put it somewhere useful.
Use the exact network details
Copy the network name carefully, including capitalization and spaces. Choose the matching security type and enter the current password. Hidden networks need the hidden-network option.
A guest network is a handy choice
If your router offers a separate guest network, you can use its details for visitors. This website does not create or configure the network; it only encodes the information you enter.
Remember what you are sharing
A Wi-Fi code contains the network credentials. Treat it like a printed copy of the password. Generate a replacement if the network name or password changes.
Give it a test before the welcome
Scan the code using the phones your visitors are likely to use. Device support varies. After testing, add it to a welcome note, guest card, or a sign with enough clear space around the code.
A little further reading: ZXing: Wi-Fi QR content format