QR Code Generator: links, Wi-Fi, contact cards, calls, SMS and maps

No. The code holds the link or text itself, with no redirect through our site, so it works for as long as the link inside it works. That also means you cannot change it later: if the page moves, set up a redirect on your own site or print a new code.

Denso Wave says larger modules (the small squares) are easier to read, so print as large as the space allows. Our measure: keep each module at least 0.4 mm wide and the code at least 2 cm wide for a phone held close, and make the code about a tenth of the distance people scan from, so a code read from 1 metre is at least 10 cm wide. Enter your print size and the tool checks it.

The password sits inside the code as plain text, so anyone who can scan or photograph the code can read it. Use it for a guest network, not the one your billing computer or CCTV uses, and change the password if the code travels further than you want.

Yes, with error correction level H, which can restore about 30% of the code (Denso Wave). The logo covers part of the code, so the tool keeps it small and on a plain box. Whether it scans depends on the code and the phone, so test the downloaded file with a few phones before printing.

No. Your browser builds and draws the code, and the logo you open stays on your device. Nothing is sent to our server, and we cannot see the codes you make or count their scans.