Do QR codes expire?
The printed pattern is ink and cannot expire. The redirect behind a dynamic code can be switched off, and that gap is where the horror stories live.
Read the guide →QR codes in print, explained
What makes a printed code scan, what makes one die, and the numbers to check before anything goes to the printer.
How to scan a QR code on iPhone and Android
Open the camera, point it at the code, tap the link that appears. Fixes for codes that refuse to scan, and how to judge a link before you tap it.
Read the guide →QR code error correction levels: L, M, Q and H explained
Error correction lets a damaged QR code scan anyway. The four levels recover 7, 15, 25 or 30 percent of the pattern, and each step up costs density.
Read the guide →PNG, SVG or PDF: choosing a QR code file format for print
Raster formats pixelate when scaled; vector formats redraw sharp at any size. When a 300 DPI PNG is fine, when printers demand vector, and a CMYK note.
Read the guide →QR code security: what quishing is and how to guard against it
A QR code carries a link, and a link can lead anywhere. How quishing works, how to check a code before trusting it, and what we scan for on our end.
Read the guide →QR code size chart: minimum print sizes by scan distance
Divide the scan distance by 10 to get your minimum code width. A size chart from business cards to billboards, plus quiet zone and density rules.
Read the guide →QR code tracking: what scan analytics show and what they don't
Scan analytics count scans by day, city, country, device and OS, with no personal data attached. How dynamic codes make it work and where the numbers blur.
Read the guide →UTM parameters for QR codes: put print in your analytics
Tag QR destinations with source, medium and campaign and print shows up in GA4 next to your other channels. Conventions plus a builder that applies them.
Read the guide →QR code sizing and printing: the numbers that matter
Minimum size, the 10:1 distance rule, quiet zones, and error correction levels. The handful of numbers that decide whether a printed QR code scans.
Read the guide →Dynamic vs static QR codes: which should you print?
A static QR code stores content in the pattern forever. A dynamic one stores an editable redirect. The right choice depends on what you print and how long it hangs on a wall.
Read the guide →Why QR codes die (and how to print ones that don't)
Most "free" QR codes stop working days after you print them. How the trap works, and what to check before you send anything to the printer.
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