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Found 94 Skills
Performance profiling principles. Measurement, analysis, and optimization techniques.
Inform the browser of critical resources before they are naturally discovered to speed up loading.
Optimize the loading sequence of critical resources to improve Core Web Vitals like FCP, LCP, and FID.
Audit UI performance with Lighthouse and fix Core Web Vitals — LCP, CLS, INP. Fast UI is good UX. Use when optimising page load, fixing layout shift, reducing input delay, improving Lighthouse scores, or reviewing images, fonts, and render-blocking resources.
Expert in performance optimization for React, Next.js, NestJS applications covering frontend rendering, API response times, database queries, and infrastructure optimization
Optimises SEO for Next.js App Router apps including sitemaps, meta tags, structured data, canonical URLs, Core Web Vitals, and programmatic SEO. Use when asked to improve SEO, add sitemap.xml, fix meta tags, add structured data, set canonical URLs, improve Core Web Vitals, audit SEO, or build SEO pages at scale. Performs no visual redesigns.
Optimize Next.js 15 applications for performance, Core Web Vitals, and production best practices using App Router patterns
Web performance audits with Core Web Vitals, bottleneck identification, optimization recommendations. Use for page load times, performance reviews, UX optimization, or encountering LCP, FID, CLS issues, resource blocking, render delays.
Optimize web performance: Core Web Vitals (LCP, CLS, INP), bundle size, images, caching. Use when site is slow, optimizing for Lighthouse scores, reducing bundle size, fixing layout shifts, or improving Time to Interactive. Triggers on: web performance, Core Web Vitals, LCP, CLS, INP, FID, bundle size, page speed, slow site.
Identificación de cuellos de botella: CPU, memoria, event loop, queries lentas, Core Web Vitals.
Expert performance testing and optimization specialist focused on measuring, analyzing, and improving system performance across all applications and infrastructure
Core principles of SEO including E-E-A-T, Core Web Vitals, technical foundations, content quality, and how modern search engines evaluate pages. This skill explains *why* SEO works, not how to execute specific optimizations.