What Is the PageSpeed Insights Test Tool?
PageSpeed Insights Test is a performance analysis widget that calls the Google PageSpeed Insights API from your browser. You can choose mobile or desktop strategy; results are Lighthouse lab metrics and category scores, not real-user CrUX data from the same API response.
Why Page Speed Matters for SEO and UX
Fast pages improve satisfaction and can support better organic visibility. Lab metrics complement field data from Search Console and RUM tools.
Who Should Use This Tool?
Web developers, SEO specialists, marketers, agencies, and site owners who want a quick Lighthouse snapshot without leaving the page.
How to Run PageSpeed Insights Test
Enter a URL, choose mobile or desktop strategy, optionally paste your PageSpeed API key (otherwise the configured default is used), and run the test. Runs typically take 30-60 seconds.
Core Web Vitals and Key Speed Metrics
The report includes FCP, LCP, CLS, TBT, and TTI when Lighthouse exposes them. Some audits may be empty in newer Lighthouse versions.
Performance, SEO, Accessibility, and Best Practices
The API request includes multiple Lighthouse categories so category scores are populated; without those parameters, PageSpeed often returns performance-only results.
Identify Bottlenecks and Optimization Priorities
Use the official PageSpeed Insights website for the same URL to see full opportunities, diagnostics, and filmstrip detail. This embedded tool summarizes scores and headline metrics only.
Actionable Recommendations for Faster Pages
Follow image optimization, caching, compression, and render-blocking guidance from a full Lighthouse or PSI report for your URL.
Best Use Cases for Ongoing Monitoring
Releases, redesigns, migrations, and spot checks when you need a fast lab snapshot.
Benefits for Conversion and Business Growth
Consistent speed work supports engagement and conversion alongside content and UX improvements.
Changelogs
v1.0.0 (May 2026): Initial release(alert-success)