How we verify this guide
Before this page is included in the public guide directory, its examples are compared with the payload produced by the linked QRFlow generator and with the export and scan-readiness controls available in the current build. Camera, lighting, paper, print size, and destination apps can still change the result, so important print runs should always be tested on the final material and real devices.
For events, the QR should open a fast, mobile-friendly page and be scannable from a distance.
Before you print#
- Use a stable link that will not expire before the event.
- Test on iPhone and Android with mobile data.
- Print larger if people will scan from 1–2 meters away.
During the event#
- Add a clear call-to-action near the QR.
- Keep a backup link visible in case scanning fails.
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Use cases & print ideas
Matching pages that explain where this QR type works best before you open the generator.
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Use 20-25 mm (0.8-1.0 in) for most business cards. Includes minimum size guidance for short URLs, larger sizing for vCards, quiet zone rules, and a card dimensions chart.
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Quick answers
Common questions
How big should event QR codes be?
Print larger if people scan from 1-2 meters, especially on posters.
Do I need a backup link?
Yes. Add a short URL near the QR in case scanning fails.
Try it now
Generate QR codes locally in your browser — no uploads.