Guides
QR code guides
Plain-English answers about QR codes — how they work, whether they expire, and how to make the right one — from the privacy-first 123smith generator.
Do QR codes expire?
Static codes never expire; dynamic codes depend on the service behind them. The difference, explained.
Static vs dynamic QR codes
When to use each — permanence and cost vs editability and analytics.
Free QR code, no sign-up
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vCard QR code generator
Free contact QR codes that save in one scan — perfect for business cards.
QR code with a logo
Add your logo, label and SVG export — a one-time $19 unlock, no subscription.
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