Validate Seamless Patterns
Instantly
Upload square pattern images and verify they tile seamlessly. All validation happens in your browser - no uploads, completely free!
Validation Sensitivity
Adjust the error threshold to control how strict the seamless validation is.
Error Threshold:5%
Strict (1%)Moderate (5%)Relaxed (15%)
Lower values require near-perfect edge alignment. Higher values allow more variation.
Upload Patterns
Select up to 8 square images (max 5MB each). Validation runs in your browser.
Drag and drop images here
or
Max 8 files • 5MB per file • PNG, JPG, WebP supported
How It Works
1. Upload Images
Select up to 8 square pattern images
2. Edge Analysis
We compare opposite edges pixel-by-pixel
3. Get Results
Error score ≤ 5% = seamless pattern
Tips
• Use square images for best results
• Higher resolution = more accurate
• All processing happens in your browser
• No data is uploaded to servers