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Core Web Vitals Improvement

Fixing LCP, INP and CLS against field data rather than lab scores.

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What are Core Web Vitals?

Core Web Vitals are three measures of user experience: Largest Contentful Paint for loading, Interaction to Next Paint for responsiveness, and Cumulative Layout Shift for visual stability. Targets are 2.5 seconds, 200 milliseconds and 0.1 respectively. They are assessed on field data from real visitors, not on a laboratory test score.

The problem this solves

Teams optimise for a lab score while field data stays red, because the test device and network do not resemble what visitors actually use.

Signs this applies to you

  • Lab scores are good but Search Console reports failing URLs.
  • Content jumps as images and ads load.
  • Buttons do not respond immediately after the page appears.
  • Mobile performs far worse than desktop.

How we approach it

  • Start from field data in Search Console, grouped by template rather than by URL.
  • Identify the LCP element per template and make it load first.
  • Reduce main-thread work, which is what INP actually measures.
  • Reserve space for images, ads and embeds to eliminate layout shift.
  • Fix by template so one change benefits many URLs.
  • Re-measure on field data, which takes weeks to update.
Deliverables

What you get

Included in the work

  • Field data analysis by template
  • LCP optimisation
  • Main-thread reduction
  • Layout stability fixes
  • Template-level fix list
  • Follow-up measurement

What changes afterwards

  • Passing field data on key templates
  • Better real experience on mid-range phones
  • Fewer visitors lost before content appears

Services this draws on

WordPress Speed OptimizationDiagnosing and fixing what actually makes a WordPress site slow, measured on real mobile conditions.Technical SEOFixing the crawling, indexing, rendering and structure problems that stop content from performing.Web DevelopmentBuilding designs into fast, standards-based websites that are stable to run and simple to update.

Core Web Vitals Improvement — frequently asked questions

Lab tests use one device and network. Field data aggregates real visitors on varied hardware and connections. Field data is what is assessed.

Field data updates on a rolling window, so allow several weeks after a fix before judging it.

Images without dimensions, fonts swapping, and ads or embeds injected above existing content. Reserving space fixes nearly all of it.

Related services

WordPress Speed OptimizationDiagnosing and fixing what actually makes a WordPress site slow, measured on real mobile conditions.Technical SEOFixing the crawling, indexing, rendering and structure problems that stop content from performing.Web DevelopmentBuilding designs into fast, standards-based websites that are stable to run and simple to update.

Related industries

E-commerceStore builds, catalogue structure and organic growth for retail businesses selling online.EducationSchool, college and coaching websites built around the admission decision.B2BSites built for long buying cycles, multiple stakeholders and self-directed research.TravelItineraries, enquiry handling and content for tour operators and travel agencies.

Related solutions

Lead Generation WebsiteA website built to produce qualified enquiries, with measurement wired in from the start.Website Malware RemovalCleaning a compromised website, closing the entry point and restoring search visibility.Website Speed OptimizationDiagnosing and fixing what actually slows a site, measured on real mobile conditions.Website MigrationMoving a site between platforms, domains or hosts without losing traffic.

Related resources

What Is Web Design? A Practical ExplanationWhat web design covers, how it differs from development, and what separates good from decorative.How Much Does a Website Cost in India?What actually drives website cost, and how to compare quotes that look wildly different.How Long Does Website Development Take?Realistic timelines by project type, and the things that actually cause delay.How to Choose a Web Development CompanyThe questions that separate suppliers who will serve you from those who will not.

Related reading

The Real Reason Your WordPress Site Is SlowWhy caching plugins change the score without changing the experience, and what to look at instead.What We Actually Check in a Website AuditThe checks that find real problems, and why a two-hundred-page tool export is not an audit.

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A short conversation is usually enough to tell whether we are the right fit, and what the work would realistically involve.

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