Quote
Free tool
Lightning snapshot
Core Web Vitals
AI fix order
Mobile & desktop
Site speed, measured properly
A free speed check of your page: how it feels on a phone, what is slow, and what to fix first. Fair-use limits keep the tool free for everyone.
Run check
Your URL, measured in seconds
Pick mobile or desktop, enter a work email, and we run a proper speed check with fair-use limits.
Speed check
No account required
Example snapshot
preview
Performance score
- LCP
- INP
- CLS
- TTFB
Illustrative values only. Your run returns live scores plus a link to the full PageSpeed trace.
Your results
Performance score
- LCP
- INP
- CLS
- TTFB
Results from Google PageSpeed Insights. Run another check or change the device to see how it scores differently.
Core Web Vitals
What we measure
The check bundles lab data with real-world signals. These are the numbers that usually explain why a page feels slow or jumpy.
LCP
Largest Contentful Paint
When the main hero image or headline block becomes visible. Slow LCP usually means heavy images, slow server response or render-blocking assets.
Good target: ≤ 2.5s
INP
Interaction to Next Paint
How quickly the page responds after a tap or click. Lag here feels like a broken button even when the page looks fine.
Good target: ≤ 200ms
CLS
Cumulative Layout Shift
Unexpected movement while the page loads. Banners, fonts and late-loading ads are the usual suspects.
Good target: ≤ 0.1
TTFB
Time to First Byte
Server and network latency before your page starts loading. High TTFB usually points at hosting or caching, not just cosmetic tweaks.
Good target: ≤ 800ms
FCP
First Contentful Paint
When anything meaningful first appears on screen. A fast FCP reassures visitors the page is alive.
Good target: ≤ 1.8s
TBT
Total Blocking Time
How long the main thread is busy during load. Heavy JavaScript is the common culprit on marketing sites and shop fronts.
Good target: ≤ 200ms
How it works
How it works
Fast queue, honest limits, human-readable output. No mystery dashboards or enterprise upsell mid-flow.
Paste your URL
Paste your address, pick mobile or desktop, and we run a proper speed check.
Keeping it free
We cap how often the check can run, so it stays free for everyone.
Scores land in seconds
Performance, accessibility, SEO and best-practice categories come back with what is slow and a link to the full Google report.
Prioritised next steps
Our models summarise what to fix first: images, caching, scripts or hosting. Humans review anything we quote on.
AI-assisted
What to fix first
Raw scores are useful; ordered advice is better. We turn your results into plain guidance, clustered by impact, then surface the fixes that move Core Web Vitals the most.
That is the same mindset we use on client sites: images before micro-optimisations, caching before cosmetic rewrites, hosting before blaming the theme.
Images and hero weight
Modern formats, sensible dimensions and lazy loading often move LCP more than micro-optimising CSS.
Caching and compression
Browser cache headers, Brotli and a CDN edge can slash TTFB without redesigning the site.
Third-party scripts
Chat widgets, trackers and tag managers stack up. Defer or self-host what you actually need.
Hosting and TLS path
Solid UK hosting with sensible DNS is the bedrock everything else sits on.
Business case
Why it matters
Speed is not a badge for developers. It is how customers decide whether to stay, buy or call you back.
53%
mobile abandon rate
Google research: over half of mobile visits leave when load passes three seconds. Speed is revenue, not vanity.
Core
Web Vitals signal
LCP, INP and CLS feed real-world ranking signals. Fixing them helps humans and search engines alike.
UK
team, same care
We host, build and tune sites ourselves. Results map to work we can actually do for you.
Why we cap it
Fair-use limits keep this tool sustainable. Full audits and remediation are what we do for clients. This is a free taster, not an unlimited service.
What you get
Performance, SEO, accessibility and best-practice scores for the analysed URL. For waterfalls and traces, use the official PageSpeed link we show with your results.
Need real-world speed work?
Hosting, Google speed scores and pages that feel fast, under one UK team. WaveSites from Launch to Surge, or run WaveCheck free before you commit.