WiFi QR Code Generator

What the code actually contains

A WiFi QR code encodes a short text string in a defined format carrying the network name, the security type and the password in plain text. Scanning it prompts the device to join. There is no encryption or obfuscation in the code itself: anyone who scans or photographs it obtains the password directly, which is worth understanding before printing one.

Security type must match

The string declares WPA, WEP or nopass. Declaring the wrong type causes the join to fail with an unhelpful error, and this is the most common reason a generated code does not work. WPA covers WPA2 and WPA3 in this format. Networks with no password use nopass, and the password field is then ignored.

Hidden networks need a flag

If the SSID is not broadcast, the code needs an explicit hidden flag or the device will not find the network even with correct credentials. Omitting it produces a code that works on networks you tested and fails on the one that actually needed it.

Special characters need escaping

Semicolons, commas, colons and backslashes are delimiters in the format and must be backslash-escaped inside the SSID or password. A password containing a semicolon silently truncates at that point, producing a code that fails authentication while looking entirely correct. This is the second most common cause of a non-working code.

Use a guest network

A printed code on a café table or in a guest room is a permanent, copyable disclosure of the password to anyone who photographs it. Put visitors on an isolated guest network with client isolation enabled, so a compromised guest device cannot reach your printers, NAS or other machines. Rotate the guest password periodically; rotating the main one is disruptive, which is precisely why people never do it.

Generated locally

The code is produced in your browser, so the network password is never transmitted to any server.

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