Guides
Everything you need to know about QR codes
Practical, no-fluff guides to QR codes: how big to print them, how to scan them on any phone, design and placement best practices, and how businesses use them.
- Design & printQR code size: how big should a QR code be?The minimum QR code size for business cards, flyers, posters and signs — with a free calculator based on scanning distance and content. 5 minUpdated October 10, 2026
- BasicsHow to scan a QR code on iPhone and AndroidHow to scan QR codes with an iPhone, Samsung, Pixel or any Android phone — no app needed — plus fixes when a code won’t scan and safety tips. 4 minUpdated October 10, 2026
- Design & printQR code best practices: design, print and placementTwelve rules for QR codes people actually scan: contrast, quiet zone, error correction, logos, calls to action, print, placement and testing. 4 minUpdated October 10, 2026
- IndustriesQR codes for restaurants: menus, payments and reviewsHow restaurants, cafés and bars use QR codes for menus, ordering, UPI payments, Google reviews and Wi-Fi — with placement tips and mistakes to avoid. 4 minUpdated October 10, 2026
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