PERF-009medium SeverityPerformance, Assets & Bundle Optimization
Core Web Vitals Pass Lighthouse Performance Baseline (75+)
Accumulated client scripts, unoptimized fonts, and missing image dimensions push Core Web Vitals into failing zones.
1-Click Fix Prompt for Cursor & Claude Code
Review my codebase for "Core Web Vitals Pass Lighthouse Performance Baseline (75+)" (PERF-009). Issue: Accumulated client scripts, unoptimized fonts, and missing image dimensions push Core Web Vitals into failing zones. Remediation required: Audit page on Google PageSpeed Insights and fix cumulative layout shifts (CLS) and largest contentful paint (LCP). Please: 1. Locate any occurrences of this issue across my repository. 2. Refactor the code to follow production standards without breaking existing functionality. 3. Provide a clear command or step to test and verify the fix.
Why AI Assistants Write This Bug
Accumulated client scripts, unoptimized fonts, and missing image dimensions push Core Web Vitals into failing zones.
AI code generation prioritizes immediate syntax execution over production edge cases. When an assistant hits an undefined variable or strict type error, it frequently takes the path of least resistance rather than implementing standard pre-launch security patterns.
Code Comparison
Common AI Code PatternVulnerable
// Vulnerable AI-generated pattern for: Core Web Vitals Pass Lighthouse Performance Baseline (75+)
// Problematic pattern: Accumulated client scripts, unoptimized fonts, and missing image dimensions push Core Web Vitals into failing zones.Launch-Ready Fix
// Production-ready fix for: Core Web Vitals Pass Lighthouse Performance Baseline (75+)
// Recommended remediation: Audit page on Google PageSpeed Insights and fix cumulative layout shifts (CLS) and largest contentful paint (LCP).Remediation & Verification Checklist
Remediation: Audit page on Google PageSpeed Insights and fix cumulative layout shifts (CLS) and largest contentful paint (LCP).
- Search your codebase for pattern matching "Core Web Vitals Pass Lighthouse Performance Baseline (75+)".
- Apply the recommended remediation: Audit page on Google PageSpeed Insights and fix cumulative layout shifts (CLS) and largest contentful paint (LCP).
- Run local build and test commands to ensure no regressions.
- Verify in your browser or with curl that the issue is resolved.
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