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Lighthouse Scores
Performance, Accessibility, Best Practices, and SEO scores from Google's Lighthouse engine. The same engine used by PageSpeed Insights.
Get Lighthouse scores, Core Web Vitals, and detailed step-by-step optimization advice. Plus benchmark your browser's performance.
Enter any URL for a full Lighthouse audit with actionable optimization advice.
How this page performs across different browsers. Your browser is highlighted.
Lighthouse audit data plus real browser benchmarks.
Performance, Accessibility, Best Practices, and SEO scores from Google's Lighthouse engine. The same engine used by PageSpeed Insights.
LCP, CLS, TBT, FCP, Speed Index, and TTFB. The metrics Google uses to evaluate real-world user experience and search rankings.
Not just "what's wrong" but exactly how to fix it. Step-by-step instructions with code examples for every issue found.
Render-blocking resources, unused JavaScript, unoptimized images, missing compression. Each with estimated time savings.
Identifies oversized images, missing modern formats, offscreen images that should be lazy-loaded, and estimated byte savings.
Tests your browser's JavaScript execution speed, DOM rendering throughput, and layout performance with synthetic benchmarks.
Real Lighthouse audit, not estimates.
Paste the website URL you want to test.
Google's Lighthouse runs a full audit on your URL.
Get scores, vitals, and step-by-step fix instructions.
Developers, agencies, and site owners who care about real performance.
Get Lighthouse scores with detailed fix instructions. No more guessing how to implement recommendations. Every issue comes with code examples.
Benchmark client websites across different browsers. Show Lighthouse scores and Core Web Vitals in reports and proposals.
Core Web Vitals are a Google ranking factor. Identify exactly what's hurting your scores and get step-by-step fixes to improve rankings.
Every second of load time costs conversions. Find the biggest performance bottlenecks and learn exactly how to fix them.
We use the same Google Lighthouse engine, so the scores are identical. The difference is that we provide detailed step-by-step fix instructions with code examples for every issue found. We also include browser performance benchmarks that PageSpeed Insights doesn't offer.
Yes, 100% free. No account, no limits. The analysis is powered by Google's free PageSpeed Insights API.
Lighthouse scores (Performance, Accessibility, Best Practices, SEO), Core Web Vitals (LCP, CLS, TBT, FCP, Speed Index, TTFB), and detailed optimization opportunities with estimated savings. Plus browser benchmarks for JS speed, DOM rendering, and layout performance.
Google's Lighthouse runs a comprehensive audit that loads your page, measures performance, checks accessibility, validates best practices, and evaluates SEO. This thorough analysis takes time but provides accurate, reliable results.
Yes, the speed test works for any publicly accessible URL. The analysis is performed by Google's infrastructure, so even sites that block cross-origin requests work perfectly.
We don't store any URLs or results. The analysis request goes directly from your browser to Google's PageSpeed Insights API. The browser benchmark runs entirely locally.
Most speed test tools tell you what's wrong but not how to fix it. BrowserCrunch combines Google's Lighthouse engine with detailed, step-by-step fix instructions for every issue found. Each recommendation includes code examples, impact estimates, and clear explanations of why the issue matters.
The same engine used by PageSpeed Insights and Chrome DevTools. Get reliable Performance, Accessibility, Best Practices, and SEO scores for any publicly accessible website. Core Web Vitals included.
Every recommendation comes with detailed instructions: what the issue is, why it matters for performance, and exactly how to fix it with code examples. Render-blocking resources, unused JavaScript, unoptimized images, missing compression — each with specific, actionable fixes.
How fast is your browser? Our synthetic benchmark tests JavaScript execution speed, DOM rendering throughput, and layout calculation performance. Compare results across Chrome, Firefox, Safari, and Edge to understand how your site performs in each browser.
Get Lighthouse scores with implementation guidance, not just audit results. Generate detailed performance reports for clients. Benchmark across browsers to understand real-world user experience. No account needed, no data collection.