What problem does it solve? UX reviews are often subjective and inconsistent. This Skill applies Nielsen's 10 Usability Heuristics systematically to a page or component, combining screenshots in light and dark mode with source code analysis to produce a structured, severity-rated findings report with concrete fix suggestions. ## Core Features & Use Cases - Structured heuristic evaluation: Scores all 10 Nielsen heuristics with Pass / Minor / Moderate / Critical severity ratings in a consistent table format. - Visual and code evidence: Captures screenshots in both light and dark mode and reads the component source, so findings reflect the full implementation rather than surface appearance. - Actionable findings: Each issue references the exact element, prop, or file and includes a specific fix suggestion. - Use Case: Ask for a UX review of the AlertDialog component before a release, and receive a findings table flagging a missing loading state on the submit action as Moderate severity with a recommended fix. ## Quick Start Ask the AI to run a heuristic analysis of a page path like /components/button or a component name like AlertDialog.