A slow website drives your customers away (and Google)

On the web, attention is measured in seconds. A visitor who waits too long for a page to display grows weary, hits back and heads to a competitor. Every extra second of load time raises the bounce rate and mechanically lowers your chances of converting, whether that's a quote, a call or a sale.

Speed doesn't only affect the experience: it's also a ranking factor. Google assesses page experience through Core Web Vitals, and with comparable content, a fast site gains the edge in the search results. A slow site therefore suffers twice over: fewer satisfied visitors, and lower rankings.

Speed is part of technical SEO: a field where targeted optimisations produce fast, lasting gains, without always requiring a full redesign.

The effect of an overly long load follows a simple logic. The longer a page takes to display, the higher the bounce rate: some visitors give up before even seeing your content. And every visitor lost at the top of the journey is one conversion fewer at the bottom. Slowness acts as an invisible leak all along your funnel.

This impact is measured on Google's side too, through Core Web Vitals. Three metrics sum up the loading experience: LCP, which measures how long the main content takes to display; INP, which gauges responsiveness to interactions; and CLS, which reflects the page's visual stability. Core Web Vitals in the green send a positive signal to Google and support your rankings.

The orders of magnitude vary by sector and you should stay cautious about exact figures, but the trend is constant: a faster site holds its visitors better, converts more and ranks more easily. Improving speed means acting on both the experience and your visibility.

Optimising speed isn't a developer's vanity project: it's one of the best effort-to-result actions for your online presence. A site that displays fast keeps its visitors longer, guides them more easily toward action and sends good signals to Google. Technical performance works silently, on every visit, for your customers as much as for your rankings.

Speed fits into a broader technical SEO effort: site structure, indexing, structured data and page experience form a coherent whole. It's this healthy foundation that lets your content and your organic search express their full potential.

Whether your site is already live or still a project, the right reflex is to measure before acting. For a new project, go straight for a fast, optimised site; for an existing site, an audit targets the slowdowns to fix first.