A few years ago, "fast" was a bonus. Today it's a requirement. Google measures, users decide in milliseconds, and the competition is one tab away. Ignoring this means losing — quietly, but constantly.

The good news: performance isn't witchcraft. In most cases, a few targeted measures are enough to turn a sluggish website into a fast one.

What speed actually means

When I say "fast," I don't just mean time-to-first-pixel. It's about perceived speed — when a user thinks: "This site responds to me."

Google measures this in three values, the Core Web Vitals:

  • LCP (Largest Contentful Paint) — when the largest element is visible. Target: under 2.5 seconds.
  • INP (Interaction to Next Paint) — how quickly the page responds to clicks. Target: under 200ms.
  • CLS (Cumulative Layout Shift) — how much the page "jumps" while loading. Target: under 0.1.
"A 1-second delay reduces conversions by 7%." — Akamai Online Retail Performance Report

The five levers that really matter

1. Deliver images correctly

Images often make up 60-70% of a page's weight. WebP or AVIF instead of JPEG, srcset for different resolutions, loading="lazy" for off-screen images. These are the basics — and have the biggest effect.

2. Preload fonts

Web fonts are beautiful but expensive. Load only the weights you actually need. Set font-display: swap so text is immediately visible. With variable fonts: one file, many weights — perfect for modern designs.

3. Trim JavaScript

Most websites don't need React, Vue, or a huge framework. Vanilla JS, well-written, beats any library on performance. If you need a framework: Astro, Solid or Qwik deliver modern DX with minimal bundles.

4. Use cache & CDN

Static assets belong on a CDN. Netlify, Vercel or Cloudflare make this effortless. With the right Cache-Control headers, the second visitor gets content in under 100ms.

5. Question third-party scripts

Every external script is a performance risk. Google Analytics, Hotjar, ad trackers — they block the main thread. Ask yourself for each: do I really need this? If yes: load as late as possible (defer) or async.

What does this mean concretely?

In a typical optimization scenario, clean image delivery and a critical-CSS refactor are often enough to drop LCP from over 4 seconds to under 1.5 seconds. Industry studies like the Akamai report cited above show: every second of pageload improvement can mean up to 7% more conversion — same traffic, no new marketing costs.

That's the point: performance pays for itself. Quickly.

How to start

Go to PageSpeed Insights and test your most important page. If your LCP is over 2.5s or your performance score under 80 — we should talk.

Performance isn't a one-time project, it's a mindset. But if you take the first step, the next ones are usually surprisingly easy.