How to Use PageSpeed Insights

· Category: Web Performance

Short answer

PageSpeed Insights combines lab data from Lighthouse with real-world field data from the Chrome User Experience Report. It provides a comprehensive performance summary.

Steps

  1. Visit pagespeed.web.dev and enter your page URL.
  2. Review the overall score and individual Core Web Vital values.
  3. Examine the lab diagnostics for specific optimization opportunities.
  4. Check the field data section to see how real users experience the page.
  5. Implement the recommended fixes and rerun the test.

Tips

  • Field data requires sufficient traffic to appear; low-traffic pages may show only lab data.
  • The Origin Summary shows site-wide trends across all pages.
  • Download the report as a PDF to share with stakeholders.

Common issues

  • Ad blockers can cause missing resource errors in the lab test.
  • Scores fluctuate based on server load and network conditions.