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Free Website Speed Test & Core Web Vitals Checker

Test your website speed and performance with our free Google PageSpeed Insights tool. Get detailed Core Web Vitals analysis, LCP/FID/CLS scores, and actionable optimization recommendations instantly.

Google PageSpeed Insights API
Actionable Performance Recommendations
Mobile & Desktop Speed Testing
Real User Experience Data

Analyze Website Performance

Enter any website URL to get a comprehensive Core Web Vitals analysis with actionable optimization recommendations.

Include http:// or https:// for best results

Analysis typically takes 5-10 seconds • Powered by Google PageSpeed Insights

Google Core Web Vitals Test

Test your website's Core Web Vitals including LCP (Largest Contentful Paint), FID (First Input Delay), and CLS (Cumulative Layout Shift) - the key metrics Google uses for search ranking and user experience.

Website Performance Optimization

Get detailed performance optimization recommendations with step-by-step implementation guides to improve your website speed, user experience, and search rankings.

Real User Monitoring Data

Access real user experience data from Chrome User Experience Report (CrUX) combined with lab testing data for comprehensive website performance analysis.

Free Website Speed Test Tool - Why Core Web Vitals Matter

Our free website speed test tool provides comprehensive Core Web Vitals analysis using Google PageSpeed Insights API. Core Web Vitals are essential ranking factors that directly impact your search engine visibility and user experience.

What We Test

  • • LCP (Largest Contentful Paint): Loading performance - should occur within 2.5 seconds
  • • FID (First Input Delay): Interactivity - should be less than 100 milliseconds
  • • CLS (Cumulative Layout Shift): Visual stability - should be less than 0.1
  • • PageSpeed Score: Overall performance rating from Google
  • • Performance Opportunities: Specific optimization recommendations

Why Use Our Speed Test Tool

  • • 100% Free: No signup or registration required
  • • Google API: Powered by official PageSpeed Insights API
  • • Mobile & Desktop: Test performance on both device types
  • • Real User Data: Access CrUX data when available
  • • Actionable Reports: Detailed optimization recommendations

Frequently Asked Questions About Website Speed Testing

What are Core Web Vitals and why are they important?

Core Web Vitals are a set of real-world, user-centered metrics that quantify key aspects of user experience. They measure loading performance (LCP), interactivity (FID), and visual stability (CLS). Google uses these metrics as ranking factors, making them crucial for SEO and user experience.

How accurate is this free website speed test?

Our speed test uses the official Google PageSpeed Insights API, providing the same accuracy as Google's own tool. We combine lab data with real user experience data from Chrome User Experience Report when available, ensuring comprehensive and reliable results.

What's the difference between mobile and desktop testing?

Mobile testing simulates performance on slower devices and networks, typically showing lower scores due to resource constraints. Desktop testing reflects performance on faster devices. Google prioritizes mobile performance for rankings, making mobile testing particularly important.

How can I improve my Core Web Vitals scores?

Common optimizations include: optimizing images and fonts for LCP, minimizing JavaScript execution time for FID, and ensuring elements don't shift unexpectedly for CLS. Our tool provides specific recommendations based on your website's analysis.

How often should I test my website speed?

We recommend testing monthly or after significant changes to your website. Regular monitoring helps you catch performance regressions early and maintain good Core Web Vitals scores for optimal search rankings.

Free Website Speed Test & Core Web Vitals Checker by GA4Hell

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Powered by Google PageSpeed Insights API • 100% Free Website Speed Test • No signup required • Mobile & Desktop Analysis

Test your website performance, analyze Core Web Vitals, improve search rankings, and optimize user experience with our comprehensive speed testing tool.