Why it matters
Better page experience helps visitors; a lab performance score is a diagnostic, not the same as real-user Core Web Vitals.
Do it step by step
- 1
Check representative mobile pages in PageSpeed Insights and Search Console.
- 2
Record available field data for LCP, INP, and CLS; note when there is not enough field data.
- 3
Use lab suggestions to fix major image, script, or layout problems.
- 4
Recheck field data after enough real visits have accumulated.
Example
A large hero image may delay LCP; optimize its delivery and verify the effect over time.
Check your work
You can distinguish field metrics from lab diagnostics and have retested the affected page type.
Complete when
Representative pages were measured and significant fixable issues were addressed or tracked.
Prompt for an AI coding agent
Use this with an agent that can inspect your project. Account and external actions remain yours to complete.
Inspect my existing website project before editing. Measure and improve Core Web Vitals. Check representative mobile pages in PageSpeed Insights and Search Console. Record available field data for LCP, INP, and CLS; note when there is not enough field data. Use lab suggestions to fix major image, script, or layout problems. Recheck field data after enough real visits have accumulated. Keep the existing framework and design conventions. Verify the result with the project's checks and by inspecting the rendered page or response. Explain any manual account, hosting, or Search Console steps I must do myself.
Tools and references
Reviewed 2026-11-04