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QR code help
Can free QR codes expire?Some free QR codes last forever, some die in 14 days. The difference is what exactly is free: the pattern, or the redirect service behind it. Here are the signals.Do QR codes expire?QR codes themselves never expire — but the services behind them do. How to tell if yours has an expiry date hidden inside, before you print.Dynamic QR code broken? Diagnose the redirect chainYour dynamic QR code stopped working: subscription, scan limits, account access, provider outage — the failure points in order, a recovery path, and when to stop renting.How to verify a QR code before printingFive checks in five minutes before any print run: what the code really encodes, whether it depends on a server, multi-phone scanning, size for the distance, and the one-copy proof.Printed QR code not working?It scanned perfectly on screen and fails on paper. What printing changes — resolution, size, contrast, materials — and the one-copy test that saves reprint budgets.QR code deactivated after a free trial: your options.Your free QR trial ended and your printed QR stopped opening? Learn how to confirm the redirect, recover a link and avoid paying for the wrong fix.QR code redirect problems, explained simplyThe scan works but the page doesn't arrive: 404, 500, certificate warnings, slow hops, dead link shorteners. Read the redirect chain and fix the failing hop.QR code too blurry? Fix the file, not the printerBlur, pixelation, ink bleed or compression? Identify which one you have, why screenshots and stretched JPEGs are the usual culprits, and how to export files that stay sharp.QR code too small? Minimum sizes that actually workBusiness card, flyer, menu, poster, shop window: practical minimum sizes for each, why URL length changes the answer, and the mistakes designers make.Restaurant menu QR code not working? Check these causes first.A practical checklist for a restaurant QR menu that stopped opening: scanning, printed cards, the menu URL and third-party redirect services.Why did my QR code stop working?Your QR code worked, then died. Here are the 5 real causes ranked by frequency, a 2-minute diagnosis, and what can still be recovered.Why won't my QR code scan?Camera does nothing, scan fails, or only some phones manage it? Work through the three layers — phone, design, surface — and fix the real cause.
Guides
Are QR codes safe?QR codes are storage, not programs — the risk is where they send you. Quishing explained, the preview habit that neutralizes it, and how to make your own codes trustworthy.How long do QR codes last?A QR code has no expiry date — but four different clocks run on it: the ink, the material, the destination page, and (for dynamic codes) the subscription. Here is each one's lifespan.How QR codes workWhat is actually inside a QR code: finder patterns, modules, versions, and the error correction that lets a damaged code still scan — explained without jargon.How to create a QR code that never failsFailure-proofing is seven decisions made at creation: static architecture, your own domain, short URL, level-H correction, real contrast, right size, and the proof test.QR code best practices: 12 rulesDesign, content, print and lifecycle: twelve rules distilled from every failure mode we document — contrast, quiet zone, correction level, size, formats, verification.QR code error correction, explainedThe four correction levels, what 30% tolerance really buys you, why logos depend on it entirely, and the test results behind our 'always H for print' rule.How to print a QR code correctlyReal print numbers, not folklore: minimum sizes by scan distance, why the white margin is not optional, and how small a well-built QR can actually go — tested.QR code size guideThe reference table: business cards, flyers, menus, posters, windows, signage — with the distance rule, why URL length shifts the minimums, and print resolution floors.Static vs dynamic QR codes: the real differenceOne encodes your address, the other encodes a rented redirect. What that changes for permanence, price, analytics and printed material — with an honest decision table.What is a permanent QR code?A permanent QR code is a static code whose destination lives in the pattern itself — no redirect server, nothing to expire. The definition, the 10-second test, and the marketing traps.