Speed is one of those website topics that sounds technical but really isn't. It's mostly about respecting a customer's time and a customer's data. If your site takes seven seconds to show its main content, you've lost roughly half your visitors before they ever read a word — and Google has noticed too. Here's what actually matters, in plain English.

The numbers Google uses

Google measures three things, called Core Web Vitals, on every site. The thresholds for "good" are:

  • LCP (Largest Contentful Paint) — under 2.5 seconds. This is when the biggest visible thing on the page (usually the hero image or headline) is fully loaded.
  • INP (Interaction to Next Paint) — under 200 milliseconds. The time from a tap to the page actually responding.
  • CLS (Cumulative Layout Shift) — under 0.1. How much the page jumps around as it loads. Banner ads and slow fonts are the usual culprits.

You can check yours for free at PageSpeed Insights. Run your home page on the mobile tab. If you're "good" on all three, you're ahead of most of your local competitors.

Why three seconds is the real benchmark

Google's thresholds are a useful starting point, but the human one is simpler. Around the three-second mark, customers on phones start to bounce. Studies put the bounce-rate increase at roughly 30% per second past three. For a small business with maybe 500 visitors a month, the difference between a 2-second and a 6-second load is the difference between two enquiries a week and barely one.

Speed is not a luxury feature. For a small business, every extra second of load time is a measurable percentage of customers walking away.

What actually slows sites down

Massive images

By far the most common culprit. A single phone-camera photo is often 4–5 MB; you can usually serve the same image at 200–300 KB and no human eye would tell the difference. Modern formats (WebP, AVIF) are smaller still. If you're using WordPress or Wix, look for an image-compression plugin or built-in optimisation toggle and switch it on.

Heavy themes and page builders

A typical Wix or WordPress site with a popular template ships 600 KB to 2 MB of JavaScript on every page, much of it unused. That's the price of generic-template flexibility. Hand-built static sites are usually 30–80 KB total. The difference is felt instantly on slower phones and rural 4G.

Plugins and chat widgets

Each "useful" plugin — chat widget, cookie banner, review carousel, Facebook pixel, analytics, heatmap — typically adds 50–200 KB and a few hundred milliseconds. Most small business sites have between four and eight plugins they don't actually need. Removing them is the cheapest performance work you can do.

Slow hosting

Cheap shared hosting can add half a second to every request. For most small static sites, a £4–£8 a month VPS or even free static hosting is faster than a £15 a month "managed WordPress" plan. The website is lighter, so it doesn't need a heavyweight host.

The 80/20 fix list

If you do nothing else, in this order:

  1. Compress your images. Anything over 300 KB on a small business site is too big. There are free tools (Squoosh, TinyPNG) that take seconds.
  2. Remove plugins you don't actively use. If you can't remember why it's there, delete it.
  3. Drop background videos. They're almost always more cost than benefit.
  4. Use system fonts or one self-hosted font. Loading three Google Fonts each in five weights is a quiet performance disaster.
  5. Lazy-load images below the fold. One HTML attribute (loading="lazy") and you're done.

You can usually take a 6-second site to a 2-second site in an afternoon, without changing how it looks.

When speed isn't your real problem

Worth saying: a fast site doesn't fix unclear messaging, missing area names, or a buried phone number. If your site loads in 1.5 seconds but customers still bounce, the issue is what the page says, not how quickly it says it. Speed is a hygiene factor — necessary, but not sufficient.

That said: a slow site is a guaranteed leak, and it's usually the cheapest leak to plug. Start there.

If you'd like us to look at your site, we'll run it through PageSpeed, list the three biggest fixes, and tell you whether it's worth doing yourself or worth a small piece of work. Drop us a line — we don't charge for the conversation.