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@mcp-perfectpixel/core

v0.1.3

Published

Deterministic capture + pixel-diff engine for mcp-perfectpixel: screenshots a URL and diffs it against a static design image, returning grouped diff regions with severity scores.

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

hiimbomb1999hiimbomb1999

Keywords

mcpvisual-regressionpixel-diffdesign-to-codescreenshotplaywrightpixelmatchsource-map

Readme

@mcp-perfectpixel/core

Framework-agnostic capture + pixel-diff engine behind mcp-perfectpixel.

  • Deterministic Playwright capture (fixed locale/timezone, reduced motion, animations disabled, fonts awaited).
  • pixelmatch diff with connected-component region grouping, merging, and severity scoring; optional textRegionThreshold pass that drops text anti-aliasing noise.
  • Region → source tracing: CSS source maps (hand-rolled source-map v3 decoder), then gitignore-aware text search, with confidence scoring and platform presets (Shopify / BigCommerce / HTML+Tailwind / React / Vue).
  • Minimal patch suggestions derived from design-image pixels, preferring design tokens the project already defines (CSS custom properties, SCSS $vars, Tailwind config, style-dictionary JSON, Shopify {%- schema -%} settings) — with Figma-resolved tokens (designContext.tokens) treated as ground truth and Figma node boxes (designContext.nodes) naming each region's layer.

No MCP dependency — reuse the engine for other tooling.

License

MIT