How-To 2026-05-11 7 min By Cornelious Fazal

QR Code Not Scanning? Diagnose and Fix the Problem

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Quick Answer

When a QR code is not scanning, identify whether the failure occurs during camera detection, payload decoding, phone handling, or destination loading. Test the original export, physical proof, second device, exact payload, and signed-out destination separately before changing artwork or reprinting.

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// FAQ

Frequently Asked Questions

The camera may be unable to separate the symbol from its surroundings because of quiet-zone intrusion, low light-dark separation, blur, glare, cropping, motion, distortion, or insufficient apparent size. Test the original export and a physical proof on another phone before changing the design or ordering a reprint.

This is a destination-side server error. The QR code decoded correctly, but the destination URL was moved or deleted. Set up a 301 server redirect from the old URL to the active web page. A first-party page is easier to maintain than a temporary file, social post, or vendor link that may later change.

Indoor fixtures may reflect from glossy paper, plastic, glass, or a screen and hide modules from the camera. Change the phone or sample angle, try the scanner's flashlight in low light, and test a matte proof. Keep a readable destination or contact route available when scanning fails.

Decode the final export and verify its payload, then produce one proof using the actual printer, size, colors, material, finish, cutting, and mounting method. Test several phones at realistic distances, angles, and lighting, and complete the destination task while signed out before approving the production run.
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