How WiFi QR Codes Get Devices Online
What this generator does
A WiFi QR code packs everything a phone needs to join a network — the SSID, the password, and the security type — into a single scannable image. This generator takes those details from the form fields, encodes them in the standard WIFI: string that phone cameras recognise, and renders the matching QR as a PNG you can download.
Set the network name, choose WPA/WPA2, WEP, or an open network, flag a hidden SSID if needed, and the code updates in the preview as you type — there is no separate button to press.
When to use it
Guest WiFi is the classic case. Instead of reading a long password aloud or writing it on a whiteboard, you print one code and let visitors point a camera at it. Cafés, waiting rooms, and short-term rentals often tape a printed code near the counter or door.
At home, a code stuck inside a cupboard saves you from digging out a router label every time a friend visits. Higher error-correction levels help when the printout is small or might get scuffed, since the code still scans with part of it damaged.
A concrete example
Say the network is named CafeGuest, secured with WPA2, and the password is Latte2024. The encoded string looks like WIFI:T:WPA;S:CafeGuest;P:Latte2024;;. The T field carries the security type, S the SSID, and P the password.
An open network drops the password and uses T:nopass, while a hidden network adds H:true so the phone knows to look for a non-broadcast SSID.
Notes and edge cases
Match the security type to your router exactly — a WPA code will not connect to a WEP network, and vice versa. WEP passwords must be 5, 10, 13, or 26 characters, while WPA/WPA2 passwords run from 8 to 63; the form flags a mismatch before you download.
Most modern phones join automatically after scanning, though some show a confirmation prompt first. Because the password is embedded in plain text inside the code, treat a printed WiFi QR like the password itself: share it only with people you would give the network to anyway.