QR Code Best Practices
Practical guidelines for size, placement, printing, testing, and deployment across different environments — from business cards to billboards, screens to product packaging.
QR Code Sizing: Minimum Size for Every Distance
Size formulas and lookup tables for scan distances from 10cm to 10m. Module size requirements for reliable scanning.
QR Code Printing: Paper, Ink, and Resolution
Print specifications: DPI, ink types, paper stock, lamination, and quality control for reliable QR code reproduction.
Testing QR Codes: A Complete Verification Guide
Systematic testing protocol: device matrix, distance testing, lighting conditions, edge cases, and regression testing.
QR Code Quiet Zone: The Most Ignored Requirement
Why the 4-module quiet zone matters, common violations, and how to ensure your QR code has adequate margins.
QR Codes on Curved Surfaces
Printing QR codes on bottles, cans, tubes, and cylindrical packaging. Distortion compensation and module size adjustments.
QR Codes in Emails: When and How
Embedding QR codes in email: when it makes sense, image rendering issues, alt text, and screen-to-screen scanning ergonomics.
QR Code Accessibility: WCAG and Inclusive Design
Making QR codes accessible: alt text, colour contrast, alternative text links, screen reader support, and inclusive placement.
Avoiding Common QR Code Mistakes
The 15 most common QR code mistakes: no quiet zone, low contrast, wrong EC level, expired URLs, and untested codes.
QR Codes for Screen Display: TVs, Monitors, and Projectors
Displaying QR codes on screens: resolution requirements, Moire pattern avoidance, brightness settings, and viewing distance.
QR Code URL Shortening: When and How
Shortening URLs for smaller QR codes: services, custom domains, permanence concerns, and when to avoid shorteners.
QR Code Maintenance: Keeping Codes Working Long-Term
Long-term QR code management: URL monitoring, domain renewal, redirect chain health, and replacement strategies.
QR Code Material Selection: From Paper to Metal
Choosing materials for QR code reproduction: paper, vinyl, metal etching, ceramic, and fabric. Durability per environment.
QR Codes in Low-Light and Outdoor Environments
QR code scanning in challenging conditions: night-time, dimly lit venues, direct sunlight, rain, and reflective surfaces.
QR Code Version Selection: Balancing Size and Data
How to choose the optimal QR code version: data length analysis, EC level needs, physical size constraints, and version override.
QR Code Deployment Checklist
Pre-deployment verification checklist: data validation, size, EC level, print quality, placement, testing, and monitoring.