Core Web Vitals are Google's measurements of real-user page experience: loading (Largest Contentful Paint), responsiveness (Interaction to Next Paint) and visual stability (Cumulative Layout Shift). Good scores do not guarantee rankings, but slow, jumpy pages lose customers.
By Trux Nguyen, Founder and Director of Unitrux, with 5 years in marketing and SEO. Published 25 October 2026. Last updated 25 October 2026.
The three metrics
| Metric | Measures | Good threshold |
|---|---|---|
| LCP | Loading of main content | 2.5 seconds or less |
| INP | Responsiveness to interactions | 200 milliseconds or less |
| CLS | Visual stability | 0.1 or less |
Thresholds from Google Search Central.
Why they matter beyond rankings
A page that loads slowly on a phone loses visitors before they read a word. Many local customers search on mobile in a hurry.
Our expert view
We fix Core Web Vitals when they are poor, but we do not chase perfect scores at the expense of content. Content and relevance usually matter more; speed matters when it is bad.
Demand
In Google Keyword Planner (United States, retrieved 25 October 2026), "core web vitals" shows 1,000 to 10,000 monthly searches, with top-of-page bid estimates around $14.
Related reading
- Page Speed Optimization
- Mobile SEO
- Technical SEO Services
- Ecommerce SEO Services
- Hiring an SEO Freelancer vs an Agency
- International SEO
- All SEO guides for business owners
About the author
Trux Nguyen is the Founder and Director of Unitrux, with 5 years of experience in marketing and SEO. Areas of work: SEO, AEO, GEO and AIO, local SEO, content strategy, schema markup, keyword research, Google Ads and analytics. Contact: [email protected].
Frequently asked questions
Are Core Web Vitals a ranking factor?
Google uses page experience signals, but relevant content still matters most.
Where can I see my scores?
In Search Console and PageSpeed Insights.
What usually causes poor scores?
Large images, heavy scripts and layout shifts from ads or embeds.
Limits and honest expectations
Search engines and AI assistants change their answers over time and no one controls them. Results vary by industry, city and competition, and we do not guarantee a position, a mention or a number of leads. We report what is measurable, plainly.
Sources
- Google Ads Keyword Planner, volume ranges and bid estimates for the keywords named in this article, retrieved 25 October 2026.
- Google Search Central, Understanding Core Web Vitals and Google search results: https://developers.google.com/search/docs/appearance/core-web-vitals
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