Know Your Site Speed in Seconds
Instant Core Web Vitals analysis, Lighthouse scores, and actionable optimization recommendations. Free and developer-friendly.
Everything You Need to Optimize Performance
Comprehensive performance testing powered by Google Lighthouse with actionable insights
Core Web Vitals Dashboard
Instant LCP, INP, CLS, FCP, and TTFB metrics with color-coded scoring
Lighthouse Performance Score
Overall performance rating from 0-100 with visual gauge
Multi-Device Testing
Test performance on both mobile and desktop simulations
Optimization Insights
Prioritized recommendations with impact levels and technical guidance
Shareable Report Links
Unique URLs for each test with social media preview cards
Resource Breakdown
Comprehensive analysis of JavaScript, CSS, images, and fonts
How It Works
Three simple steps to better performance
Enter Your URL
Simply paste your website URL and click "Test Now"
We Analyze Performance
Our tool runs comprehensive Lighthouse tests on mobile and desktop
Get Actionable Insights
Review detailed metrics, recommendations, and share your results
Related Performance Tools
Explore our other tools for comprehensive website monitoring
CoreVitals
Real-time Core Web Vitals monitoring for your website. Track LCP, INP, CLS, and other metrics as real users experience them.
Monitor in real-timeLoadTime Analyzer
Visual resource performance analysis with interactive waterfall charts. See exactly which resources are slowing down your page.
Analyze resourcesFrequently Asked Questions
Everything you need to know about SpeedCheck Pro
What is SpeedCheck Pro?
SpeedCheck Pro is a free website performance testing tool powered by Google Lighthouse. It provides instant Core Web Vitals analysis, performance scores, and actionable optimization recommendations to help you improve your website's speed and user experience.
How accurate are the test results?
Our tests use Google's official PageSpeed Insights API with real Chrome browser simulations. The results are highly accurate and reflect the same data you'd see in Google PageSpeed Insights. However, remember that performance can vary based on server location, network conditions, and time of day.
What are Core Web Vitals?
Core Web Vitals are key metrics that Google uses to measure user experience. They include LCP (Largest Contentful Paint) for loading performance, INP (Interaction to Next Paint) for responsiveness, and CLS (Cumulative Layout Shift) for visual stability. These metrics directly impact your Google search rankings.
Is SpeedCheck Pro really free?
Yes! SpeedCheck Pro is 100% free to use with unlimited tests. No registration, no credit card, no hidden fees. All features including mobile/desktop testing, detailed reports, and shareable links are completely free.
How long does a test take?
Most tests complete in 30-60 seconds. The exact time depends on your website's complexity and current server load. We run comprehensive Lighthouse audits that analyze performance, accessibility, and best practices.
Can I save my test results?
Yes! Your test history is automatically saved in your browser's local storage. Each test also generates a unique shareable link that you can bookmark or share with your team. Report links are stored for 30 days.