Why is my website slow, and what is it costing you?

A slow website does not announce itself. Nobody emails to say they left because the page took too long. They tap back, choose the next result, and the business never knows. That silence is what makes speed easy to ignore and expensive to ignore. Here is how to check yours, why it is probably slow, and what a fast site is built from.

Check it in five minutes

1. Open your site on your own phone, on mobile data, somewhere other than your office. Count. If you are waiting, your customers are leaving.
2. Run it through Google's PageSpeed Insights, which is free and reports the measurements Google itself uses. Look at the mobile result first; it is the one that matters.
3. Notice whether the page jumps around as it loads. Layout that shifts under a finger is one of the things Google measures and one of the most irritating things a site can do.

The usual causes

• Images that are far larger than they need to be. A photograph straight from a camera on a hero banner is the single most common cause of a slow business site, and the easiest to fix.
• Everything loaded at once. Scripts, fonts, sliders, chat widgets, analytics, and plugins, all downloaded before the visitor sees a word.
• A template or builder carrying features you do not use. The page loads the whole toolkit to use one tool.
• Plugin sprawl on WordPress sites: each one adds weight, and they are rarely removed.
• Cheap shared hosting, slow to respond before the page even starts to load.
• Third-party embeds: maps, video players, social feeds, and booking widgets that pull in more than the page itself.
• Fonts loaded from several sources in several weights, blocking the text from appearing.

What it costs

Two things, and both are hard to see. First, visitors. A share of the people who would have become enquiries leave before the page is usable, and they leave from every channel: search, the map, social, your own business card. Second, visibility. Google has used page experience, including speed and layout stability, as a ranking consideration for years, so a slow site is also a less-found site, which compounds the first cost. We do not put a number on either, because the honest number depends on your site and your customers. Measure your own; the free tools will tell you.

What a fast site is built from

Speed is not an optimisation applied at the end. It is a set of decisions made throughout the build, which is why a site can only be made fast by someone who cares about it from the start.

• Images sized for where they appear, compressed in modern formats, and loaded only when they are about to be seen.
• As little code as the page needs, delivered in the order the visitor needs it.
• Fonts chosen deliberately, loaded once, with text visible while they arrive.
• A layout that reserves space for everything before it loads, so nothing shifts.
• Hosting that responds quickly and serves the site from somewhere near the visitor.
• Third-party embeds treated as costs, included only when they earn their weight, and loaded after the page is usable.
• Motion that respects the device's settings and never blocks the content.

Fast is a feeling

Beyond the measurements, speed is part of how a site feels. A page that responds instantly to a tap communicates competence before the visitor has read anything; a page that lags communicates the opposite. It is one of the things we mean by what makes a website feel premium, and it is why we treat performance as a design property rather than an engineering afterthought.