Core Web Vitals Checker With Clear Fix Priorities

Core Web Vitals are user experience signals tied to speed and stability. SEOHealthChecker combines field data (CrUX) with lab diagnostics to help you improve LCP, INP, and CLS where it matters most.

Field vs lab: know what users really experience

Field data reflects real-user performance. Lab tests explain why pages are slow. By viewing both, you avoid chasing false wins and focus on improvements that impact actual users.

Template-based performance fixes

Performance issues are usually template-level: heavy scripts, large images, render-blocking CSS, slow TTFB. The report helps you pinpoint where those problems cluster so developers can fix root causes.

Prioritize performance that affects SEO

Not every speed improvement is equal. We connect performance findings to key pages and templates so you don't spend weeks optimizing low-impact URLs.

Frequently Asked Questions

What are Core Web Vitals?
Core Web Vitals are key UX metrics: LCP (loading), INP (interactivity), and CLS (visual stability).
Is Core Web Vitals a ranking factor?
Google uses page experience signals alongside relevance. Improving CWV can help, especially when content relevance is similar.
Why do lab and field results differ?
Lab runs in controlled conditions while field data reflects real devices, networks, and user behavior.