Core Web Vitals: How to Make Your Website Lightning Fast

A one-second delay in load time can measurably reduce conversions. Google has made speed an official ranking signal. Yet most websites are far slower than they need to be — and the fixes are well understood. Here's what matters and how to get it right.

The three Core Web Vitals

Google measures real-world user experience with three metrics:

• LCP (Largest Contentful Paint): how fast the main content loads — aim for under 2.5s

• INP (Interaction to Next Paint): how responsive the page feels when you tap or click

• CLS (Cumulative Layout Shift): how much the layout jumps around as it loads

The biggest culprits

Most slow sites share the same problems: oversized unoptimised images, too much JavaScript shipped to the browser, render-blocking scripts, and fonts that cause layout shift. The good news is that each has a well-established fix.

How we make sites fast

We render pages on the server or pre-build them as static HTML, ship the minimum JavaScript needed, serve optimised images in modern formats from a global CDN, and self-host fonts to eliminate layout shift. The result is sites that feel instant and score in the green on Core Web Vitals.

Speed is a business metric

Faster sites rank higher, convert better and cost less to run. Performance isn't a developer vanity metric — it directly affects revenue. Treat it as a feature and measure it continuously.

The bottom line

If your current site feels sluggish, it's almost certainly costing you traffic and sales. A performance audit is one of the highest-ROI things you can do — and we're happy to run one for you.