Optimizing React Performance

React performance tuning is less about clever tricks and more about being intentional. ## Watch render boundaries Memoize expensive components and keep prop signatures small. You want React to skip work when nothing changed. ## Measure, then improve The React Profiler and browser performance tools tell you where frames are dropping. Fix the hotspots—not just the suspicious code. ## Ship less JavaScript Bundle splitting and `React.lazy` make large features load only when needed. Faster startup makes everything else feel instant.