Visual Diff Analyzer

Tooling built to give designers at Microsoft a visual representation of changes in updated icons across the fluentui-system-icons repo. What started as a standalone website is now a Python script embedded directly in the CI pipeline — automatically generating diff reports on every bi-weekly icon push.

1. generates overlaid images of old and new icons, using color and transparency to highlight exactly which pixels changed
2. uses ImageMagick to produce a numerical diff score alongside the visual, giving designers and engineers a shared language for "how different is this?"
3. evolved from a manually-updated website to a script that runs automatically as part of the bi-weekly icon release process, so the team always has a diff report without anyone having to think about it