Page Speed Test
Check your Core Web Vitals and load speed instantly. Google-powered insights.
Understanding Core Web Vitals
Core Web Vitals are the key metrics Google uses to evaluate user experience. They directly impact your search rankings and should be monitored regularly.
"Core Web Vitals are not just technical metrics — they measure real user experience. A site that feels fast ranks better and converts more."
Common Speed Killers
Understanding what slows down your site is the first step to fixing it. These are the most frequent performance issues we see.
- Unoptimized Images: Uploading 5MB PNGs instead of compressed WebP/AVIF formats is the #1 reason for slow LCP.
- Render-Blocking JS/CSS: Loading heavy scripts in the <head> prevents the browser from painting content immediately.
- No Caching: Missing Cache-Control headers force return visitors to re-download all assets.
- Too Many Fonts: Loading 5-6 font weights can delay text rendering and increase CLS significantly.
Mobile vs Desktop Performance
Mobile devices use slower networks (4G) and have less processing power. Google prioritizes mobile-first indexing, so mobile performance is critical for your rankings.
- Network Speed: Mobile connections are typically 3-10x slower than desktop connections.
- CPU Throttling: Mobile processors are significantly less powerful, affecting JavaScript execution time.
- Mobile-First Indexing: Google uses your mobile performance as the primary ranking signal.
How to Use This Tool
Enter any URL and click "Analyze". The tool runs a Google Lighthouse audit and returns your performance score, Core Web Vitals metrics (LCP, CLS, TBT, FCP), and real user data (CrUX) when available. Toggle between mobile and desktop results to compare performance across devices.
Frequently Asked Questions
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