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Image Diff

Compare two images pixel-by-pixel with visual highlighting

Image 1
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Image 2
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Upload two images and click "Compare"

How it works

  • Each pixel of the two images is compared by RGB color distance
  • If the distance exceeds your threshold, the pixel is marked as different
  • The threshold slider (0-100) lets you ignore minor compression artifacts or anti-aliasing differences
  • If the images have different sizes, they are scaled to the smaller dimensions before comparison

Use cases

  • UI regression testing β€” spot pixel changes between deploys
  • Compare design variations or before/after screenshots
  • Detect image compression damage
  • Visual proofreading of layout adjustments