SEO5 min read
Core Web Vitals in 2026: what still moves rankings
Short answer
Core Web Vitals are a tie-breaker, not a silver bullet. Good scores protect rankings and conversion; bad ones cost both.
- INP is the interactivity metric now.
- Field data matters more than lab data.
- Images and third-party scripts are the usual suspects.
Core Web Vitals aren't a silver bullet — but bad scores visibly cost rankings and conversion. In 2026 it pays to look at the right places.
INP is the new metric
Interaction to Next Paint (INP) replaced FID and measures how smoothly your page responds to input. Heavy JavaScript work is the most common culprit.
The usual suspects
Most problems come from a few sources:
- oversized, unoptimised images,
- blocking third-party scripts,
- layout shifts from missing size attributes.
Solve those three cleanly and you're usually already in the green.
Frequently asked questions
Are Core Web Vitals a strong ranking factor?
More of a tie-breaker. With similar relevance they can decide the outcome — and they affect conversion directly.
Lab or field data?
Field data (real users) is what counts. Lab tools help you debug but don't decide the assessment.
Sources
- INP replaced FID as the Core Web Vital for interactivity.web.dev · 2024-03-12
