Image Similarity Checker

Find duplicate or similar images

Reference image for comparison
Image to compare against reference
Different algorithms provide different insights
💡 Algorithm Guide
  • MSE (Mean Squared Error): Pixel-by-pixel comparison, lower is more similar (0 = identical)
  • Histogram Comparison: Compares color distribution, good for similar scenes with different lighting
  • Perceptual Hash: Detects structural similarity, robust to minor edits and resizing
  • SSIM: Structural Similarity Index, considers luminance, contrast, and structure
  • Use Cases: Duplicate detection, image matching, quality comparison, copyright checking
  • Best Practice: Use "All Algorithms" for comprehensive comparison

How to Use Image Similarity Checker

1

Upload Images

Select 2 or more images to compare.
2

Analyze Similarity

Tool calculates similarity percentage.
3

View Results

See similarity scores and visual comparison.
4

Identify Duplicates

Find exact or near-duplicate images.

About Image Similarity Checker

The Image Similarity Checker compares images to find duplicates, near-duplicates, or similar content using perceptual hashing algorithms.

Features:

  • Similarity percentage
  • Visual comparison
  • Duplicate detection
  • Batch comparison
  • Different sizes/formats supported

Useful for organizing photo libraries, finding stolen content, removing duplicate images, and managing large image collections efficiently.

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