Cut React LCP from 28s to ~1s with a four-phase framework covering bundle analysis, React optimizations, SSR, and asset/image tuning.

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A four-phase framework for optimizing React applications demonstrates how to reduce LCP from 28 seconds to ~1 second. The guide covers bundle analysis and code splitting, React-specific optimizations including the React Compiler and lazy loading, server-side rendering with TanStack Start, and asset optimization through CDNs and image prioritization. Each phase includes baseline measurements, specific techniques with code examples, and measurable impact on performance metrics.

A complete guide to React performance optimization

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