Measure page speed with real-user data
seo-performanceskillsetup L2★128
AgriciDaniel/codex-seo ↗What it does
Measure Core Web Vitals and page speed
Best for
Diagnose page speed issues with real-user field data
Inputs
- · URL
- · optional PageSpeed API key
Outputs
- · LCP/INP/CLS metrics
- · Lighthouse score
- · performance report
Requires
- · PageSpeed Insights
- · CrUX data optional
Preconditions
- · page accessible
Failure modes
- · CWV data unavailable
- · new pages lack historical CrUX
Trust signals
- · CrUX preference
- · Lighthouse fallback
- · Lab vs field labeled