Website Speed & Performance Analyzer
Real Google Lighthouse scores for mobile and desktop — Core Web Vitals, AI-ranked fix recommendations, and detailed diagnostics. Free, instant, no login.
How the Performance Analysis Works
01
Dual Lighthouse Scan
We run simultaneous Google Lighthouse audits on both mobile and desktop, capturing real performance signals across Performance, SEO, Accessibility, and Best Practices categories.
02
Core Web Vitals Analysis
LCP, CLS, TBT, FCP, TTFB, Speed Index, and TTI are extracted and colour-coded against Google's Good / Needs Work / Poor thresholds — the same signals Google uses for rankings.
03
AI Fix Prioritisation
Each failing audit is analysed, ranked by performance impact (High/Medium/Low), and converted into a plain-English recommendation with estimated savings where available.
Need Help Optimising Your Website?
Poor PageSpeed is costing you conversions and rankings. Our engineering team diagnoses root causes and ships fixes that measurably improve Core Web Vitals, organic traffic, and ROAS.
Frequently Asked Questions
How is this different from Google PageSpeed Insights?
This tool uses the same Google Lighthouse engine but adds AI-powered prioritisation: recommendations are ranked by business impact, include estimated savings, and are written in plain English rather than technical audit notation. You also get mobile and desktop results side by side.
Why do mobile and desktop scores differ so much?
Lighthouse simulates a mid-range Android device on a 4G connection for mobile audits, while desktop uses a faster CPU and network profile. Most sites score 15–30 points lower on mobile. Google weights mobile performance more heavily in its ranking algorithms.
What is a good performance score?
Google classifies 90–100 as Good, 50–89 as Needs Improvement, and 0–49 as Poor. For most e-commerce sites, a mobile score of 60+ is achievable and competitive. Enterprise brands typically target 80+ across both strategies.
What is Largest Contentful Paint (LCP)?
LCP measures how long it takes for the largest visible element — typically a hero image or headline — to fully render. Google's Good threshold is under 2.5 seconds. LCP is one of the three Core Web Vitals that directly influence Google Search rankings.
How do I improve my performance score?
The highest-impact fixes are: preloading and compressing your hero image (LCP), deferring non-critical JavaScript (TBT), enabling Brotli compression, and deploying a CDN with efficient cache-control headers. The AI Recommendations section above shows exactly which issues your site has, ranked by impact.