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Image Diff Viewer

v1.0.3

Compare two images side-by-side and highlight pixel-level differences.

Compares two images side by side and highlights pixel-level differences using an overlay heat map — useful for regression testing, screenshot comparisons, and design review.

How to use
  • Upload two images to compare; they should be the same dimensions.
  • The diff heat map shows changed pixels; adjust the threshold to control sensitivity.
  • Use during visual regression testing to catch unintended UI changes.

Image A (Before)

Click to upload

Image B (After)

Click to upload