Question 1

Do these QR codes expire?

Accepted Answer

No. They are static codes with the data encoded directly in the pattern, so they keep working indefinitely and do not depend on any service staying online.

Question 2

Is my data sent to a server?

Accepted Answer

No. The code is generated locally in your browser, so Wi-Fi passwords and contact details never leave your device.

Question 3

Can I track how many people scan it?

Accepted Answer

Not with a static code. Scan analytics require a dynamic redirect, which means routing users through a third-party domain — a trade-off we deliberately avoid.

Question 4

What size should I print it?

Accepted Answer

Roughly one tenth of the scanning distance. About 2–3 cm for handheld use, larger for posters and signage.

Question 5

Can I add a logo in the middle?

Accepted Answer

Yes, if you set error correction to H and keep the logo small enough that the finder patterns stay clear.

Question 6

Which formats can I download?

Accepted Answer

PNG for screens and everyday printing, SVG when you need vector output that scales cleanly to any size.

Question 7

Is it free for commercial use?

Accepted Answer

Yes. The codes are yours to use anywhere, including on products and packaging, with no licence or attribution required.