Your website's performance is a growth channel, not an engineering metric

Marketing and engineering usually meet over the website only when something is broken. That is a missed opportunity, because the technical qualities of a site, how fast it renders, whether the layout jumps, whether a keyboard user can complete the form, are among the few conversion levers you fully control.

What the numbers actually measure

Largest Contentful Paint is how long a visitor waits to see the main content. Interaction to Next Paint is how quickly the page responds when they tap or click. Cumulative Layout Shift is how much the page moves around while loading. Each one maps to a moment where a visitor decides whether to stay. Search engines use them as ranking signals because they are proxies for the experience their users will have.

The standard we build to

Server-rendered pages with the main content in the initial response. Fonts loaded with size-adjusted fallbacks so text never jumps. Images sized, lazy-loaded and served in modern formats. JavaScript split so interactivity arrives without blocking content. Animations that run on the compositor and respect reduced-motion preferences. Forms with real labels, visible focus and error messages that say what to fix. None of it is exotic. All of it is routinely skipped.

Measure where visitors are

Lab scores on a fast laptop say little about a customer on a mid-range phone on a train. Collect field data from real visitors, segment it by device and page type, and treat regressions like you would treat a drop in conversion rate, because that is what they are.

Accessibility is part of this

Accessible sites are faster to use for everyone, rank better, and keep you out of a growing category of legal exposure. Building to WCAG 2.2 AA from the start costs little. Retrofitting it costs a redesign.