What is a QR Code Generator?
QR codes bridge print and digital: menus, posters, packaging and payment stands all use them to put a link one camera-scan away.
This generator encodes your text or URL into a QR code locally and renders it as a crisp PNG at the size you choose. No account, no watermark, and the content never leaves your browser.
Print sizing is where QR codes fail in the wild: the reliable minimum is about 2 x 2 cm for a short URL scanned at arm's length, bigger for posters scanned across a room. Short URLs also scan faster: fewer characters mean coarser, more forgiving modules, so encode example.com/menu rather than a 200-character tracking link.
Where printed QR codes fail
A QR code that scans on your screen can still fail on paper, and the causes are consistent. Contrast is the first: a code needs dark modules on a light background, and light-on-dark or a code printed over a photograph defeats many scanners. The second is the quiet zone, the clear margin around the code, which needs to be about four modules wide. Designers trim it to fit a layout, and scanners stop finding the code.
The third is physical. Ink spread on uncoated stock, matte lamination and curved surfaces such as bottles and cups all degrade the read, so print larger than the minimum when the surface is not flat paper. Test the final printed piece, not the proof on screen, and test it at the distance and lighting where people will actually meet it.
Frequently asked questions
Why won't my QR code scan?
Usually contrast or quiet zone: keep dark-on-light with a clean white margin around the code, and avoid stretching it. Very long text also makes codes dense and finicky: shorten the URL.
Can I put a logo in the middle?
Small overlays work because QR codes carry error correction, but every pixel you cover spends that budget. This generator produces clean codes; add overlays sparingly and always test-scan.
Do these QR codes expire?
Never. The code is a direct encoding of your text: there is no redirect service in the middle that could shut down.
What size should I use for print?
At least 512×512 px for A4 posters, larger for banners. Also keep a quiet white margin around the code.
Can I encode Wi-Fi credentials or phone numbers?
Yes: paste standard formats like WIFI:T:WPA;S:name;P:pass;; or tel:+91… and camera apps will act on them.
Is my link tracked?
No. The QR encodes your link directly, with no shortener or tracking layer added.