How Fast Should Your Website Load? (And Why Speed Kills Conversion Rates)

Nobody waits for slow websites any more. A few years ago people would sit and watch the loading bar. Now they hit back after two seconds and try the next result. And that next result is almost certainly one of your competitors.

Speed isn't just about user experience either. Google bakes page speed directly into its ranking algorithm. A faster website ranks higher than a slower one, all else being equal. So a slow site is losing you on two fronts at once: fewer visitors finding you, and more of the ones who do arriving and then leaving before the page has finished loading.

What "Fast Enough" Actually Means

Google measures performance through a set of metrics called Core Web Vitals. The ones that matter most for a typical small business website are:

• Largest Contentful Paint (LCP) — how long until the main content is visible. Should be under 2.5 seconds.
• Interaction to Next Paint (INP) — how quickly the page responds when someone taps or clicks something. Should be under 200 milliseconds.
• Cumulative Layout Shift (CLS) — how much the page jumps around as it loads. Should be as close to zero as possible.

In plain terms: your page should be showing its main content within about two and a half seconds, and it shouldn't be jumping around or lagging when someone tries to use it. That's the target.

What Actually Makes Websites Slow

Most slow small business websites have the same handful of culprits:

Unoptimised images

This is the number one cause of slow websites. If you've uploaded photos directly from your phone without resizing or compressing them first, you might have images that are 3–4 megabytes each. A page with six of those can take ten seconds to load on a phone. Images for websites should typically be under 200kb and saved in a modern format like WebP.

Cheap shared hosting

The hosting company you use — the server your website lives on — has a significant impact on how quickly it responds. Budget shared hosting (where your site shares resources with hundreds of others) can be noticeably slow. It's not always obvious in normal use, but it affects your PageSpeed scores and your rankings.

Too many plugins or scripts

This is particularly common on WordPress sites. Every plugin adds code that has to load. A site with 30 plugins — many doing very little — will always be slower than a leaner site doing the same job with fewer moving parts.

No caching

Caching means storing a ready-made version of your pages so they don't have to be rebuilt from scratch every time someone visits. Without it, your server is doing unnecessary work on every page load. Proper caching can cut load times dramatically with minimal effort.

Why This Matters Beyond SEO

Even if you set aside the ranking implications entirely, speed matters because of what happens to real visitors on slow pages. People on mobile connections are particularly sensitive to slow load times. A page that takes four or five seconds to load on a phone will lose a significant percentage of visitors before they've read a single word of your content.

Those are enquiries you'll never know you lost. They didn't call, they didn't fill in the form — they just left silently and called someone else.

What to Do if Your Site Is Slow Right Now

Run the PageSpeed Insights test and look at what it flags. Image issues can often be fixed quickly by replacing oversized photos with compressed versions. Hosting issues require moving to a better provider. If you're on a DIY builder with a consistently poor mobile score, you may find there's a ceiling on how much you can improve — the platform itself generates slow code.

For many small businesses, the honest answer is that a site built properly from the ground up — with speed as a priority from the start — will outperform a patched-up slow one indefinitely. It's one of those things that's much easier to get right at the build stage than to retrofit later.