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1. perf-audit perf-auditPublic

   Fast, browserless CLI that audits a URL's HTML and response headers for common frontend performance issues. Findings link to explainers on frontend-performance.com.

   TypeScript

2. cwv-budget-guard cwv-budget-guardPublic

   CI gate that checks Core Web Vitals against a performance budget and fails the build on regressions, diffing against a saved baseline. Findings link to explainers on frontend-performance.com.

   TypeScript

3. bundle-budget-report bundle-budget-reportPublic

   CLI that reports per-route JS/CSS bundle weight against budgets, flags heavy third-party packages, and suggests code-splitting boundaries — from a built dir or a webpack stats.json. Guides on front…

   TypeScript

4. cache-header-lint cache-header-lintPublic

   CLI + GitHub Action that crawls a deployed page and audits caching headers (immutable hashed assets, Cache-Control, ETags, CDN hints), flagging misconfigurations. Explainers on frontend-performance…

   TypeScript

5. perf-monitor-lite perf-monitor-litePublic

   Drop-in Real User Monitoring for field Core Web Vitals: a tiny snippet that beacons Web Vitals to a self-hosted Cloudflare Worker with a p75 dashboard. Metric guides on frontend-performance.com.

   TypeScript

6. lcp-hunter lcp-hunterPublic

   Browser overlay (MV3 extension + bookmarklet) that highlights the LCP element, render-blocking resources, and long tasks on any page, with a fix tip and deep-link for each finding. Docs on frontend…

   TypeScript