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rendering-performance - Optimize browser rendering and web performance

Analyze rendering pipelines, Core Web Vitals, React updates, layout work, and image loading to identify performance improvements.

Tags

Updated: 2026-10-15

Capabilities

Typical Inputs

Typical Outputs

What this skill does

  • Explain the pixel pipeline
  • Diagnose Core Web Vitals
  • Identify LCP elements
  • Reduce layout shifts
  • Improve interaction responsiveness
  • Optimize React rendering
  • Detect layout thrashing
  • Guide performance measurement

Inputs

  • Page source code
  • Performance measurements
  • Field user data
  • Target device profiles

Outputs

  • Performance findings
  • Optimization recommendations
  • Rendering bottleneck analysis

Requirements

    Source

    • Spec: SKILL.md

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    web performance
    browser rendering
    Core Web Vitals
    LCP
    INP
    CLS
    React
    Explain the pixel pipeline
    Diagnose Core Web Vitals
    Identify LCP elements
    Reduce layout shifts
    Page source code
    Performance measurements
    Field user data
    Performance findings
    Optimization recommendations
    Rendering bottleneck analysis