Check your website's performance score, loading speed, and Core Web Vitals in seconds.
Powered by Google Lighthouse. See exactly what's slowing your site down.
Paste any webpage URL. We analyze it using Google PageSpeed Insights.
Your page is tested on mobile for performance, accessibility, SEO, and best practices.
See your scores, Core Web Vitals, and what to fix to improve rankings.
Get a Lighthouse performance score from 0-100 showing overall page speed
Check LCP, FCP, TBT, and CLS — the metrics Google uses for ranking
See how accessible your page is for users with disabilities
Check if your page follows SEO best practices that affect rankings
Tests are run on mobile by default — where most users browse
Uses Google PageSpeed Insights API — the same engine Chrome DevTools uses
Page speed is a confirmed Google ranking factor. Slow pages lose visitors and rank lower in search results. A 1-second delay in page load time can result in a 7% reduction in conversions.
Core Web Vitals became a ranking signal in 2021 and their importance continues to grow. Google measures LCP (loading), FID/INP (interactivity), and CLS (visual stability) to determine user experience quality.
Pages that pass Core Web Vitals thresholds get a ranking boost in Google Search. This tool shows you exactly where your page stands and what needs to be fixed.
But speed only matters if Google can find your page. Make sure your pages are indexed first. Use IndexFlow to check your indexing status and submit pages that Google hasn't discovered yet.
A score of 90-100 is considered good (green), 50-89 needs improvement (yellow), and below 50 is poor (red). Most websites score between 40-70 on mobile. Focus on getting above 70 first, then optimize further. Google uses page speed as a ranking factor, so faster pages tend to rank higher.
Core Web Vitals are three metrics Google uses to measure user experience: LCP (Largest Contentful Paint) measures loading speed — should be under 2.5 seconds. FCP (First Contentful Paint) measures when the first content appears. CLS (Cumulative Layout Shift) measures visual stability — should be under 0.1. TBT (Total Blocking Time) measures interactivity.
The most impactful improvements are: optimize and compress images (use WebP format), enable browser caching, minify CSS and JavaScript, use a CDN, reduce server response time, lazy load images below the fold, and remove unused CSS/JS. Start with the largest impact items first.
Mobile devices have slower processors, less memory, and often use cellular networks which are slower than Wi-Fi. Google primarily uses mobile speed for ranking (mobile-first indexing). That is why this tool defaults to mobile analysis — it shows the experience most of your users will have.
Test after every major deployment or content change. Set up monthly monitoring as a baseline. Page speed can change when you add new images, scripts, or third-party tools. Regular testing helps catch performance regressions before they affect your rankings.