Speed is a feature. It affects conversion, SEO, and how premium your product feels. Here's how we consistently ship sites with sub-second Time to Interactive and 90+ Lighthouse scores.
Server-first by default
With the Next.js App Router, we render as much as possible on the server. Client JavaScript is reserved for genuine interactivity — a theme toggle, a form, a scroll animation — not for laying out static content.
Ship less JavaScript
- Keep interactive islands small and specific.
- Prefer CSS for motion and layout where it's enough.
- Lazy-load anything below the fold that isn't critical.
Design tokens, not one-off styles
A small, consistent set of design tokens keeps the CSS lean and the UI coherent across light and dark themes. It also makes the whole system easier to maintain.
Measure, then keep it honest
Performance regresses quietly. We treat Core Web Vitals as a budget in CI, so a heavy dependency or an unoptimized image gets caught before it ships — not after.
Fast isn't an optimization pass at the end. It's a constraint you design around from the first commit.