Free Website Speed Test
Test any website's real Google performance score, Core Web Vitals and load speed for free. Powered by Google Lighthouse — no sign-up, instant results.
Free Website Speed Test
Check any website's real Google performance score, Core Web Vitals and load speed — powered by Google Lighthouse, the same engine Google uses to judge your site. No sign-up, results in seconds.
We test the live, public version of the page. Big sites can take 20–40 seconds — Google is doing a full audit.
Running a full Google Lighthouse audit… this can take up to 40 seconds.
Your performance score
Want a website that scores like ours?
We build fast, lightweight sites that load in around a second and score 90+ on this very test. If your numbers above aren't where you'd like them, we can help.
Get a free website review →What these numbers actually mean
Google's speed test grades a page from 0 to 100 and breaks it down into Core Web Vitals — the real-world measurements Google uses as a ranking signal. Here's what each one is telling you.
Performance score (0–100)
The headline grade. 90+ is good (green), 50–89 needs work, under 50 is poor. It's a weighted blend of the metrics below, on a simulated mid-range mobile.
LCP — Largest Contentful Paint
How long until the main content appears. Aim for under 2.5s. Usually the single biggest thing visitors notice, and a confirmed Google ranking factor.
CLS — Cumulative Layout Shift
How much the page jumps around as it loads. Aim for under 0.1. High CLS is what makes you tap the wrong button as things move.
TBT — Total Blocking Time
How long the page is frozen and unresponsive while scripts run. Aim for under 200ms. Bloated themes and too many plugins are the usual culprits.
Why website speed is worth fixing
Speed isn't a vanity metric. Google has confirmed page experience and Core Web Vitals as ranking signals, so a slow site is fighting an uphill battle for visibility. And it costs you customers directly: studies consistently show that conversions fall as load time climbs — every extra second of wait is people leaving before they ever see your offer. A fast site ranks better, converts better and simply feels more trustworthy.
The good news is that speed is fixable. Most slow sites share the same handful of causes: oversized images, a heavy page-builder theme, too many plugins, render-blocking scripts, and slow, oversold shared hosting. We wrote up the full picture — with real before-and-after data from 20 local sites — in our website speed, SEO & sales study.
How we build sites this fast
This very website is built on the same approach: clean, lightweight code instead of a bloated builder, properly optimised and lazy-loaded images, server-level caching, and our own fast UK NVMe hosting. The result is pages that load in around a second and score in the high 90s on the test above — run it on weblevelup.co.uk and see for yourself.
If your score isn't where you want it, that's exactly the kind of thing we fix — whether through a faster website, a move to better hosting, or an ongoing maintenance plan that keeps it quick. Ask for a free, no-obligation review and we'll tell you honestly what's slowing you down.