performance-audit-websites

Audit website performance. Use for Core Web Vitals, LCP, INP, CLS, Lighthouse or browser performance checks, bundle and asset weight, image/video loading, font loading, third-party scripts, animation cost, hydration cost, and production-readiness performance review.

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Repository: TheGoat395/Codex-Skills
Last source activity: June 21, 2026 at 20:33
Detected SKILL.md language: English
Stars: 117
Forks: 46

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npx skills add https://github.com/TheGoat395/Codex-Skills --skill performance-audit-websites

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SKILL.md

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design-motion-principles

Motion and interaction design skill using interpretive lenses informed by publicly available work from Emil Kowalski, Jakub Krehel, and Jhey Tompkins. Two modes: build interactive components with purposeful motion, or audit existing animations to catch AI-generated motion anti-patterns. Use when creating, adding, animating, or reviewing UI motion: transitions, hover states, micro-interactions, enter/exit animations, or motion design work in React, Framer Motion, CSS, or HTML. This skill is not authored, reviewed, or endorsed by the referenced designers.

2026-07-02

frontend-quality-auditor

Audit frontend websites and apps before launch. Use for production-readiness reviews, visual polish checks, responsive QA, accessibility risks, performance and SEO basics, interaction states, forms, media, copy clarity, trust signals, and ship/no-ship recommendations for React, Next.js, static sites, dashboards, landing pages, portfolios, and product UI.

2026-07-01

gsap-performance

GSAP performance guidance — prefer transforms, avoid layout thrashing, use will-change selectively, and batch animation work. Use when optimizing GSAP animations, reducing jank, or when the user asks about animation performance, FPS, or smooth 60fps.

2026-06-25

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Performance Audit Websites

Use this skill to keep premium sites fast enough that visual ambition does not punish users.

Workflow

Inspect the project, scripts, routes, local/deployed URL, production surfaces, and available QA/deployment tooling.

Read Performance Audit Websites Guide before claiming the site is ready.

Run the narrowest meaningful checks for the risk: visual, mobile, accessibility, performance, forms, media, SEO, analytics, deployment, or handoff.

Fix issues when they are in scope; otherwise record exact evidence and remaining risk.

Summarize commands, URLs, screenshots/checks, changed files, and what was not tested.

Always Protect

Inspect before changing or shipping: framework, package scripts, build output, routes, forms, media, animation stack, deployment target, environment variables, analytics, SEO metadata, accessibility risks, and available browser QA tooling.

Do not claim something was tested unless it was actually tested; report exact commands, URLs, screenshots, viewports, failures, skipped checks, and remaining risk.

Verify desktop and mobile rendered output, not only source code. For visual or motion work, inspect screenshots, browser behavior, console errors, network failures, and responsive layout.

Treat forms, checkout, booking, CMS content, analytics, environment variables, and deployments as production surfaces with error, loading, empty, success, and rollback states.

Respect accessibility, performance, reduced-motion, and no-JavaScript/no-WebGL/no-autoplay fallbacks where relevant.

Keep secrets out of code, logs, screenshots, summaries, widgets, and committed files.

Prefer project-local tooling and existing scripts before adding dependencies. Explain any new dependency before installing it.

End with a concise handoff: changed files, commands run, checks passed, checks not run, deployment URL if any, and next risks.