Performance
Core Web Vitals
Core Web Vitals is one of the public readiness signals included in isitready.dev reports.
What we check
How the scan observes this signal.
During a scan, isitready.dev looks at the public evidence for core web vitals and records the result on the report card so teams can prioritise fixes without reverse-engineering the check.
Why it matters
Why this shows up on the report card.
Fast, stable pages help users and automated clients complete discovery with fewer retries.
How to improve
Steps in the remediation brief.
Expose the signal on the canonical public origin.
Link it from discovery surfaces such as robots.txt, sitemap.xml, HTML head metadata, or HTTP Link headers where appropriate.
Re-run the scan and confirm the evidence row now reports a passing or informational status.