Research: performance
Cached research evidence for performance (not authority).
Purpose
Section titled “Purpose”Loading speed, runtime efficiency, resource optimization based on Lighthouse. Covers critical rendering path, JS bundling/splitting, image opt (formats/sizing/lazy), fonts, caching, server response. Trigger: “optimize performance”, “speed up”, “fix slow loading”. 50+ patterns.
Harness Coverage
Section titled “Harness Coverage”Target agents: antigravity, claude-code, codex, crush, cursor, gemini-cli, github-copilot, grok, opencode.
Trust And Risks
Section titled “Trust And Risks”Curated install-now-after-trust-gate / curated-trust-gated. MIT licensed. Source by addyosmani (Chrome DevTools / web performance expert) with 2.4k GitHub stars. Unofficial collection encoding wisdom from 150+ Lighthouse audits, real-world perf engineering, WCAG 2.2, modern SEO. Stack-agnostic (React/Vue/Svelte/Next/Nuxt/Astro/plain). Skills activate on matching prompts. No specific per-skill hooks noted in config; provenance via verified npx command. Popular, reputable maintainer reduces baseline risk; still follow general audit-before-promotion guidance.
Install Prerequisites
Section titled “Install Prerequisites”npx skills add addyosmani/web-quality-skills --skill performance -y -g -a antigravity claude-code codex crush cursor gemini-cli github-copilot grok opencode. status=install-now-after-trust-gate; selector=named (group install supports multiple). Supports Claude plugin, Codex marketplace, Gemini extensions, manual copy.
Upstream Maintainer
Section titled “Upstream Maintainer”addyosmani (github.com/addyosmani/web-quality-skills). MIT License. Insights from Chrome DevTools team, web perf experts, a11y advocates. 2.4k stars, 216 forks. Resources link to Lighthouse, web.dev, WCAG, Agent Skills spec.
Comparable Alternatives
Section titled “Comparable Alternatives”Other skills in same bundle (e.g. core-web-vitals, web-quality-audit; other perf/optimization skills (e.g. from chrome-devtools)); general Lighthouse/web.dev guidance; framework-specific perf/a11y plugins; other curated quality skills like chrome-devtools-*.
> Web-augmented research; evidence only, not authority. Authoring catalog MDX is authoritative for install metadata.