Website speed optimisation service

A Lighthouse score is a useful diagnostic, but it’s a lab test on a simulated device. What Google uses in its page experience signals is field data: what real visitors experience, gathered through the Chrome User Experience Report. The three Core Web Vitals are Largest Contentful Paint (loading), Interaction to Next Paint (responsiveness) and Cumulative Layout Shift (visual stability), and Google’s “good” thresholds are 2.5 seconds, 200 milliseconds and 0.1.

A word of honesty: page experience is one factor among many, and better content will usually beat a faster page. The stronger business case is usually that fast pages are more pleasant to use, especially on phones, so more people stick around to finish what they came to do. Google’s own guidance is to aim for good Core Web Vitals, and not to expect a ranking boost from chasing a perfect score.

Where the gains usually are

Most sites have the same few problems: an oversized hero image, too many third-party scripts (chat widgets, tag managers, trackers), web fonts blocking rendering, slow server response from uncached database queries, and images without dimensions that make the page jump around. We start by measuring, so we fix the things that matter most on your site. The steps are in our website performance guide.