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Is my Wi-Fi password or contact data sent to a server when I use the QR code generator?

No. The code is built inside your browser with the qrcode library, and links, Wi-Fi passwords and contact details are not sent to any server. There is a separate question that matters more, though: whatever you put inside the printed code, a password included, can be read by anyone who scans or photographs it.

Published · 2 min read

Two different questions people mix up

  • Does the tool see my data? No. All the work happens on your device, with no account, no sign-up and no codes stored on our site.
  • Does the code hide my data? No. A QR code is not encryption; it is a way of writing text for a camera to read. Whoever has the image has the text.

What someone photographing your Wi-Fi code sees

For a network called Cafe Wi-Fi with the password coffee 2026, this is the full text inside the code, and any scanning app shows it as it is:

WIFI:T:WPA;S:Cafe Wi-Fi;P:coffee 2026;;

The password sits there as plain text after P:. That is not a flaw in the tool; it is the only way a phone can join without someone typing it. The tool warns you about this right under the password field.

A practical decision for each kind of data

  1. Guest Wi-Fi: display it freely, as long as the guest network is separate from your till, cameras and staff devices.
  2. Office or staff Wi-Fi: do not display it where customers can see. Show it on your phone when needed, or only in the staff room.
  3. Contact card: include only what anyone may see, such as a work number and work email, not your personal number or home address.
  4. Plain text: do not put secret discount codes or account numbers in it, since everyone who scans reads the full text.

How to check for yourself that nothing is sent

Load the QR code generator page, then disconnect your device from the internet and create a new code for a made-up network. The code updates in front of you with no connection, because everything happens in the browser. It is a simple test that reassures you without taking our word for it.

Common questions

Does my browser remember what I typed in the fields?

Some browsers suggest earlier entries depending on their settings; that is your browser, not the tool. On a shared computer, use a private window.

I changed the network password because the code spread. What about the old code?

The old code holds the old password and will not connect after the change. Make a new code and replace every copy on display.