QR Code Validator
Validate QR codes before printing or distribution. Check contrast ratios, error correction levels, quiet zones, module size, and other critical factors that affect scannability. Ensure your QR codes work reliably in real-world conditions.
Upload QR Code
Drag and drop an image here, or click to browse
Supports JPG, PNG, GIF, WebP
💡 What We Check
- • Contrast ratio between foreground and background colors
- • Quiet zone (white border) adequacy
- • Module (pixel) size for reliable scanning
- • Overall scannability score
- • All analysis happens locally - images aren't uploaded
What We Validate
🎨 Color Contrast
Checks if foreground and background colors have sufficient contrast (minimum 3:1 ratio recommended, 5:1 for best results). Poor contrast causes scanning failures.
🛡️ Error Correction Level
Verifies error correction setting (L, M, Q, H). Higher levels allow QR codes to work even when partially damaged. Level H (30%) recommended for codes with logos.
📏 Quiet Zone
Ensures adequate white space around QR code (minimum 4 modules). Insufficient quiet zones cause scanning apps to miss the code.
🔲 Module Size
Checks if individual QR modules are large enough for reliable scanning at intended viewing distance. Recommends minimum dimensions.
🖼️ Logo Placement
Validates logo size doesn't exceed 20% of total QR area. Oversized logos block critical data and prevent scanning.
Why Validate QR Codes?
- •Prevent Failed Scans: Identify issues before printing thousands of materials
- •Save Costs: Avoid reprinting due to non-working QR codes
- •Ensure Quality: Maintain professional standards across campaigns
- •Test Variations: Compare different color schemes and designs
- •Compliance: Meet industry standards for QR code quality