Frontend Bundle Optimization & Core Web Vitals

This page collects 4 articles, newest first. Core Web Vitals work that goes past the Lighthouse score. Finding the dependency sprawl and polyfill debt actually inflating your bundle, profiling React renders in the DevTools Profiler instead of guessing at them, and deciding when a framework's overhead is worth paying for. The measurement pieces come first on purpose: optimizing before you've measured is how teams spend a sprint shaving 4KB off a page whose real problem is a 900ms server response. Code splitting gets a guide that argues against splitting everything, since per-component chunks trade bundle size for request waterfalls. If you only read one thing here, make it the bundle analysis piece; the rest depends on knowing what's actually in your build.

Everything else we've published is in the main archive.