Troubleshooting Published on December 13, 2025 46 views

QR Code Won't Scan: Common Issues and Solutions

Troubleshoot why your QR code won't scan and learn how to fix common scanning issues.

QR Code Won't Scan: Troubleshooting Guide

If your QR code won't scan, here are the most common issues and how to fix them.

Problem: Code is too small for the scanning distance.

Solution: Increase QR code size. Minimum size should be 1/10th of scanning distance.

Problem: Colors don't have enough contrast (e.g., light gray on white).

Solution: Use high contrast colors. Black on white works best. Ensure at least 70% contrast.

Problem: Code is damaged, stretched, or distorted.

Solution: Regenerate QR code. Don't stretch or distort when resizing. Maintain aspect ratio.

Problem: Blurry or pixelated print.

Solution: Use high-resolution image (300 DPI minimum for print). Print on quality paper.

Problem: No white border around QR code.

Solution: Add white space (quiet zone) around code. Minimum 4 modules wide.

Problem: Too dark or too bright (glare).

Solution: Ensure adequate, even lighting. Avoid direct sunlight or shadows.

Problem: Code on curved or reflective material.

Solution: Place on flat surface. Avoid reflective materials or use matte finish.

Problem: Code scans but link doesn't work.

Solution: Check URL is correct and accessible. Test link before printing.