Web performance

Diagnoses a Grafana Frontend Observability (RUM) session: whether it is healthy, what went wrong, ranked problems with timestamps and evidence, likely cause, how to fix it.

grafana/skills

Optimise Grafana app plugin bundle size using React.lazy, Suspense, and webpack code splitting.

grafana/skills

Apply the Doherty Threshold — keep system response under 400ms to preserve user flow.

Owl-Listener/designer-skills

Signals scout for Core Web Vitals ($webvitals). An agent skill from PostHog/posthog.

PostHog/posthog

Performance profiling and optimization for web apps — Core Web Vitals (LCP, INP, CLS), Lighthouse audits, bundle analysis, backend profiling (CPU, memory, DB queries), N+1 detection, caching…

EliasOulkadi/shokunin

A skill your agent uses when the user says 'performance audit', 'why is it slow', 'optimize performance', 'page speed', 'Core Web Vitals', 'lighthouse', 'load time', or needs to diagnose and fix…

cwinvestments/memstack

Compresses PNG, JPEG, and GIF images before they are committed (pngquant + oxipng pipeline, jpegoptim/mozjpeg, vips, gifsicle).

bonny/WordPress-Simple-History

Implement Real User Monitoring (RUM) to capture actual user performance data including Core Web Vitals and page load times.

jeremylongshore/tons-of-skills-marketplace

Validate application performance against defined budgets to identify regressions early.

jeremylongshore/tons-of-skills-marketplace

Test application performance with k6 load/stress/soak/spike scripts and k6 scenarios, Lighthouse CI for Web Vitals, and performance budgets as CI gates.

petrkindlmann/qa-skills

Bundle analysis. An agent skill from foldkit/foldkit.

foldkit/foldkit

Applies to the static marketing site under website/ only. An agent skill from fjrevoredo/mini-diarium.

fjrevoredo/mini-diarium

Compare two or more npm packages side by side using live data — downloads, bundle size, GitHub stars, last update, known vulnerabilities, and community sentiment.

tinyfish-io/tinyfish-cookbook

SEO validator: meta/OG, Schema.org, hreflang, Core Web Vitals, crawlability.

softspark/ai-toolkit

Signals scout for PostHog web traffic. An agent skill from PostHog/posthog.

PostHog/posthog

Technical SEO auditing covering crawlability, indexation, Core Web Vitals, on-page optimization, and competitive gaps, with an 85-point checklist and remediation plans.

borghei/Claude-Skills

Guide for performance optimization in Mobazha including React rendering optimization, code splitting, Web Vitals monitoring, and utility functions for debounce/throttle/memoize.

mobazha/mobazha-unified

Plan, diagnose, and verify performance budgets, latency targets, load tests, capacity estimates, bottleneck analysis, caching strategy, query efficiency, queue throughput, and regression gates.

majiayu000/spellbook

Image SEO audit for a URL or domain. An agent skill from seranking/seo-skills.

seranking/seo-skills

Performance optimization guidance for .NET MAUI apps covering profiling, compiled bindings, layout efficiency, image optimization, resource dictionaries, startup time, trimming, and NativeAOT…

davidortinau/maui-skills

Audit image SEO on a page: alt text, weight, formats, srcset, lazy loading, CLS.

indranilbanerjee/digital-marketing-pro

When the user wants to optimize images for search engines and performance.

kostja94/marketing-skills

Optimize web performance through network protocols, resource loading, and browser rendering internals.

wondelai/skills

Performance optimization patterns covering Core Web Vitals, React render optimization, lazy loading, image optimization, backend profiling, LLM inference, and sustainability UX.

yonatangross/orchestkit

Run Lighthouse performance audit with auto-fix for common issues.

Houseofmvps/ultraship

Real User Monitoring (RUM) on Dynatrace — web and mobile frontends.

Dynatrace/dynatrace-for-ai

Comprehensive performance specialist covering analysis, optimization, load testing, and framework-specific performance.

aiskillstore/marketplace

Landing page audit and optimization for conversion. An agent skill from thatrebeccarae/claude-marketing.

thatrebeccarae/claude-marketing

Deep technical SEO auditing covering crawlability, indexation, Core Web Vitals, site architecture, canonicalization, structured data validation, and performance optimization.

thatrebeccarae/claude-marketing

Walk through a live web app AS a real user to find usability + behavioural bugs that static reviews miss.

jezweb/claude-skills

Reference data, not a reviewer. An agent skill from Community-Access/accessibility-agents.

Community-Access/accessibility-agents

Internal helper: read Lighthouse CI accessibility audits into findings.

Community-Access/accessibility-agents

A skill your agent uses when performance is a concern - sluggish pages, slow queries, bloated bundles, high-latency APIs, or whenever someone says "optimize" or "make it faster"

NoobyGains/godmode

Docker best practices including multi-stage builds, compose patterns, image optimization, and security

rohitg00/awesome-claude-code-toolkit

Modern frontend patterns for React Server Components, performance optimization, and Core Web Vitals

rohitg00/awesome-claude-code-toolkit

Web performance optimization including bundle analysis, lazy loading, caching strategies, and Core Web Vitals

rohitg00/awesome-claude-code-toolkit

Measure and improve web loading, responsiveness and visual stability with browser traces and representative workloads.

WrongStack/WrongStack

Optimize React apps for 60fps performance. An agent skill from curiositech/some_claude_skills.

curiositech/some_claude_skills

Cloudflare Workers performance optimization with CPU, memory, caching, bundle size.

secondsky/claude-skills

Motion (Framer Motion) React animation library. An agent skill from secondsky/claude-skills.

secondsky/claude-skills

Run a Maestro-style SEO assessment for meta tags, structured data, crawlability, and Core Web Vitals

josstei/maestro-orchestrate

Audit a page or the whole site for technical and on-page SEO — crawlability, metadata, heading outline, structured data, internal linking, Core Web Vitals, and the animation-specific crawlability…

textura-agency/next16-claude-starter

Next.js 16 bundle-size and build-time optimization — runs a data-driven iteration loop: measure baseline → analyze top offenders → apply ONE recipe → re-measure → verify nothing broke (build + types…

pproenca/dot-skills

Optimize Sentry performance monitoring for lower overhead and higher signal.

jeremylongshore/tons-of-skills-marketplace

Optimize Shopify theme performance for Core Web Vitals (LCP, CLS, INP).

jeremylongshore/tons-of-skills-marketplace

Establish evidence-based WebContainer capacity budgets for boot concurrency, mounted files, dependency installs, processes, previews, memory symptoms, and browser support.

jeremylongshore/tons-of-skills-marketplace

Optimize Vercel deployment performance with caching, bundle optimization, and cold start reduction.

jeremylongshore/tons-of-skills-marketplace

Browser automation, web scraping, E2E testing, and visual regression with Playwright.

EliasOulkadi/shokunin