WEB PERFORMANCE
Why a slow website is quietly costing you leads
- 18 June 2026 · 6 min read
The slowness of a website rarely shows up in a meeting agenda. It shows up quietly, one lost enquiry at a time, in the gap between an interested visitor and a buyer who never came back.
For most UK SME sites, the gap is measurable. Two seconds of additional load time on a product page or a contact page reliably trims double-digit percentages off the conversion rate of that page. The cost is invisible because it never enters the CRM — the lost visitor leaves before they ever became a lead.
Where the time goes
The four most common drains we see on Maxiion site audits are uncompressed hero imagery, render-blocking third-party scripts, unused plugin code that ships on every page, and a hosting choice that costs less than a takeaway each month and behaves accordingly. Each one is fixable in hours rather than weeks.
The order to fix them in
Start with hosting if the site sits on a cheap shared plan — the gains are immediate and proportional. Then strip render-blocking scripts that load before the page paints. Then compress and properly size the hero imagery for the device it is shown on. Finally, audit the plugin layer and remove anything that has not earned its keep.
What good looks like
A working target for a Maxiion Growth Website is a Largest Contentful Paint under 2.5 seconds on a 4G mobile connection and a Cumulative Layout Shift under 0.1 on every commercial page. Hit those two and the site is in the top tier of UK SME performance.
A working target for a Maxiion Growth Website is a Largest Contentful Paint under 2.5 seconds on a 4G mobile connection and a Cumulative Layout Shift under 0.1 on every commercial page. Hit those two and the site is in the top tier of UK SME performance.
KEY TAKEAWAYS
In short
Speed is a commercial metric
Treat page load time alongside conversion rate, not alongside server cost.
A working target for a Maxiion Growth Website is a Largest Contentful Paint under 2.5 seconds on a 4G mobile connection and a Cumulative Layout Shift under 0.1 on every commercial page. Hit those two and the site is in the top tier of UK SME performance.
Audit before you tune
A measured baseline is the difference between optimising the right page and guessing.
A working target for a Maxiion Growth Website is a Largest Contentful Paint under 2.5 seconds on a 4G mobile connection and a Cumulative Layout Shift under 0.1 on every commercial page. Hit those two and the site is in the top tier of UK SME performance.
Target sub 2.5 seconds on mobile
Largest Contentful Paint under 2.5s and Cumulative Layout Shift under 0.1 on every commercial page.
A working target for a Maxiion Growth Website is a Largest Contentful Paint under 2.5 seconds on a 4G mobile connection and a Cumulative Layout Shift under 0.1 on every commercial page. Hit those two and the site is in the top tier of UK SME performance.
Hosting first, scripts second, imagery third
Fix in the order that delivers the largest gain for the least effort.
A working target for a Maxiion Growth Website is a Largest Contentful Paint under 2.5 seconds on a 4G mobile connection and a Cumulative Layout Shift under 0.1 on every commercial page. Hit those two and the site is in the top tier of UK SME performance.
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