MG Snap

MG SnapDiff is a small but powerful visual regression testing tool that helps frontend teams catch unintended UI changes before they reach production.

The tool captures before-and-after screenshots of pages and components, then highlights pixel-level differences in an interactive diff viewer. Developers can quickly review, approve, or reject visual changes as part of their pull request workflow.

SnapDiff exposes both a lightweight web dashboard and a CLI, making it easy to plug into existing CI pipelines. It is optimized for fast local runs and repeatable test suites, so teams can confidently refactor layouts, upgrade component libraries, or tweak design systems without breaking the UI.