Guides
QR codes for print marketing: flyers, packaging, and menus
A QR code on a flyer or a package succeeds or fails at print time: placement, size, call to action, and the pre-print test that saves print runs.
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Category: Guides
Guides
EAN-13 explained: digit structure and the check digit formula
What do the 13 digits of an EAN-13 mean? GS1 prefix, item reference, check digit formula — plus the manufacturing-country myth, debunked here.
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Guides
QR code colors: customize the look without losing contrast
Dark modules on a light background, strong contrast, no inversion: the rules for coloring a QR code — and the test to run before printing.
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Guides
QR code error correction: levels L, M, Q, H explained simply
A QR code can stay readable with up to 30% of its surface damaged. Levels L, M, Q, H: what each one tolerates and when to raise correction.
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Guides
URL, SMS, email, Wi-Fi, vCard: every content type a QR code holds
A QR code is just a container: a tour of the payload formats — URL, tel:, mailto:, sms:, WIFI:, vCard — and what the phone does with each one.
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Guides
QR code print size: minimum dimensions, quiet zone, distance
Scan distance divided by 10, a 4-module quiet zone, strong contrast: the simple rules for sizing QR codes on business cards, flyers, and posters.
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Guides
Welcome to the FlashScan Pro blog: QR codes without compromise
Discover the FlashScan Pro blog: tutorials, guides and comparisons for scanning and generating QR codes and barcodes, 100% in the browser.
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