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QR Code Best Practices: A Code That Scans Every Single Time

— 4 min read

A QR code that won't scan is worse than having no code at all. Most scanning problems stem from simple design or printing mistakes that are easy to avoid.

Golden Design Rules

  • Contrast first: always a dark code on a light background. Never invert the colors.
  • Leave the "quiet zone": an empty margin around the code at least 4 modules wide.
  • Use a high error correction level (H) if you'll be adding a logo in the middle.
  • Download an SVG version for printing — it stays sharp at any size.

Test Before You Print

Print a trial copy at the final size and scan it with several different phones (old and new) and in low light. Five minutes of testing saves you from reprinting thousands of copies.

Static or Dynamic Codes?

Static codes — like the ones generated by the QR generator on our platform — store the data inside the code itself and work forever, with no subscriptions. Dynamic codes route through an intermediary service that lets you change the destination later, but they stop working if the service goes down. For most use cases, static is the smarter choice.

Tools mentioned in this article

QR Code GeneratorCreate professional QR codes for links, text, Wi-Fi, WhatsApp, and contact cards, then download them as PNG or SVG.Color PickerPick any color and instantly get its HEX, RGB, and HSL values with a live preview.Contrast CheckerCheck text and background contrast against WCAG standards to ensure readability.Image ResizerResize your images by pixels or percentage while preserving the original aspect ratio.

FAQ

What is the smallest safe print size for a QR code?

2×2 cm as a bare minimum for close-range scanning; the greater the scanning distance, the larger the code needs to be — the rule of thumb: code width ≈ one-tenth of the scanning distance.

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