Enter your URL
Homepage or a key landing page.
Free check · Google PageSpeed Insights
Test your website's Google Core Web Vitals.
See how your site performs against the metrics Google uses for real-user experience — Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift. Run the official check (PageSpeed Insights uses Lighthouse under the hood), then talk to us if the results need fixing.
We use Google's PageSpeed Insights so you're looking at the same data Google uses — wrapped with a clear next step if you need help.
Three steps. Official Google data.
Get instant visibility into your website's performance using the same metrics Google publishes for real users.
Run the Google check
We send you to PageSpeed Insights (we don't fake scores).
Act on the result
If it's failing or "needs improvement," get in touch and we'll map what to fix first.
Core Web Vitals aren't vanity scores.
Slow or unstable pages cost conversions, trust and search visibility. We use the same signals Google publishes — then connect performance work to commercial outcomes under Growth & Optimisation.
Faster first impressions
Largest Contentful Paint measures how quickly your main content loads.
Smoother interaction
Interaction to Next Paint tracks how fast your site responds to user input.
Less layout jump
Cumulative Layout Shift measures visual stability as content loads.
Clearer priority list for fixes
PageSpeed Insights identifies specific bottlenecks to address first.
Failing or "needs improvement"? That's useful.
A bad score is a roadmap, not a verdict. Clarity Growth can help with performance, Core Web Vitals, conversion and the reliability work behind ecommerce and marketing sites.
Get in touch about Core Web Vitals
Or explore ongoing optimisation → Growth & Optimisation
Common questions.
Is this Clarity Growth's own tester?
No. We use Google's PageSpeed Insights (which runs Lighthouse) so you're looking at the same data Google uses — wrapped with a clear next step if you need help.
What URL should I test?
Start with your homepage, then key money pages (product, checkout, contact, campaign landings).
Do you only fix ecommerce?
No. Brochure, Shopify, headless and custom sites all benefit — the engagement sits under Growth & Optimisation.
Make the next performance decision with clarity.
Run the free check, then tell us what you saw — we'll help prioritise the fixes that matter.
Start a conversation
Make the next decision with clarity.
Tell us what is changing, where work is getting stuck or what the next stage of growth requires.
Speak to Clarity Growth
We will help establish the problem, the opportunity and the most useful next step.