Build an interactive visual regression analysis tool that compares screenshots from two versions of a website and helps developers isolate meaningful interface changes.
Allow users to upload baseline and current screenshots, identify viewport dimensions, and optionally provide route names, component boundaries, or change descriptions.
Create:
A synchronized side-by-side comparison viewer.
An opacity overlay and pixel-difference heatmap.
Configurable ignore regions for dynamic timestamps, advertisements, and other expected changes.
A region-based difference summary.
A detector for likely layout shifts, missing elements, changed text regions, and altered spacing.
A review queue for approving or rejecting detected differences.
A baseline version history.
An exportable regression report with annotated screenshots.
Clearly distinguish pixel differences from inferred causes. Do not claim to identify the exact source-code change from screenshots alone. Support deterministic image comparisons, preserve original screenshots, and include synthetic examples of intentional redesigns and accidental layout regressions.
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