Optimizing Web Performance

Performance wins come from small, cumulative improvements: reduce payloads, prioritize critical work, and eliminate render bottlenecks.

Key strategies

• Minify and compress assets (Brotli/Gzip).
• Use HTTP caching and CDNs for static assets.
• Code-split and lazy-load non-critical modules.
• Optimize images (responsive sizes, modern formats).
• Reduce main-thread work and avoid long tasks.

Diagnostics

Use Lighthouse, WebPageTest, and DevTools Performance to find hotspots: slow network requests, long JS execution, layout thrashing.

Quick example

Dynamic import in React to lazy-load a heavy component:

const Heavy = React.lazy(() => import("./Heavy"));

Measure, fix, and iterate — small wins add up.