The real cost of a slow website (and how to fix it)

Performance is a business lever, not an engineering vanity metric.

Where the money leaks Studies consistently show conversion drops of 4–7% per additional second of load time. For a store doing $2M/year, shaving two seconds is six figures.

The 80/20 of web performance 1. Ship less JavaScript. Server components, code-splitting, and deleting unused dependencies beat any micro-optimization. 2. Optimize images. Modern formats, responsive sizes, lazy loading below the fold. 3. Cache aggressively. CDN for static assets, HTTP caching for pages, Redis for hot data. 4. Measure real users. Lab scores lie; Core Web Vitals from the field do not.

Our process Every project gets a performance budget enforced in CI. If a PR pushes the bundle past budget, it does not merge.