Performance Core Audit
performance-core · v1.1.1 · paid
Core Web Vitals-focused performance review covering loading, rendering, image optimization, and resource hints.
Loading & Resource Priority
loading-resource-priority · weight 0.3
- criticalLCP element identified and optimized for fast deliveryab-001995
- criticalTime to First Byte under 800ms at 75th percentileab-001996
- criticalCritical rendering path minimizedab-001997
- highRender-blocking CSS eliminated or inlinedab-001998
- highPreload directives added for critical fonts, images, and scriptsab-001999
- infoPreconnect added for third-party originsab-002000
- lowResource hints prefetch and prerender optimized for likely next navigationsab-002001
Rendering & Paint
rendering-paint · weight 0.25
Image & Media Optimization
image-media-optimization · weight 0.25
- mediumImage lazy loading implemented for below-fold contentab-002006
- mediumNext-gen image formats WebP and AVIF served to modern browsersab-002007
- mediumResponsive images with srcset and sizesab-002008
- mediumFont-display swap configured on all web fontsab-002009
- lowVideo poster images provided and optimizedab-002010
Script & Style Efficiency
script-style-efficiency · weight 0.2
- highNon-critical third-party scripts defer-loaded or asyncab-002011
- mediumCSS containment used on high-complexity componentsab-002012
- lowWeb Worker used for CPU-heavy operationsab-002013
- lowLayout thrashing eliminatedab-002014
- lowService Worker caching strategy definedab-002015
- lowHTTP/2 or HTTP/3 enabled on server and CDNab-002016
- lowBrotli or gzip compression enabled on text assetsab-002017
- infoStatic assets served from CDN with geographic edge cachingab-002018
- infoThird-party script impact profiled per scriptab-002019
- infoPerformance budget defined for JS bundle size, CSS, images, LCP, FID, and CLSab-002020