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Google’s Core Web Vitals are a direct ranking signal. Sites that fail LCP, CLS or INP thresholds are at a disadvantage in organic search compared to faster competitors. Beyond rankings, slow sites convert worse — every additional second of load time reduces conversion rates measurably. PageSpeed optimisation is both an SEO investment and a revenue improvement. Hellenic Technologies offers Core Web Vitals assessment and remediation for WordPress sites and custom web applications. We measure from real-world conditions (using Google Search Console data and field data, not just lab scores), identify the specific causes of poor scores, and implement targeted fixes — not generic “apply caching plugin” advice.

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Core Web Vitals Explained

  • LCP (Largest Contentful Paint) — How long it takes for the largest visible element (usually a hero image or heading) to render. Target: under 2.5 seconds. Common fixes: image optimisation, preloading LCP image, faster server response, removing render-blocking resources
  • CLS (Cumulative Layout Shift) — How much the page layout shifts unexpectedly as it loads. Target: under 0.1. Common fixes: explicit image dimensions, font loading strategy, avoiding late-loading content that pushes page elements
  • INP (Interaction to Next Paint) — Responsiveness to user interactions. Target: under 200ms. Common fixes: reducing JavaScript execution time, deferring non-critical scripts, optimising event handlers

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What a PageSpeed Engagement Covers

  1. Baseline measurement — Google Search Console field data analysis, PageSpeed Insights lab scores, WebPageTest runs across mobile and desktop
  2. Diagnostic report — Prioritised list of issues causing poor scores, with estimated impact per fix
  3. Optimisation implementation — Image compression and conversion to WebP/AVIF, lazy loading, critical CSS extraction, JavaScript deferral, server-side caching configuration, CDN setup
  4. Font optimisation — Self-hosted fonts with font-display: swap, preconnect hints, subset loading
  5. Verification — Post-optimisation measurements to confirm score improvements; Google Search Console monitoring to track field data improvement over 28-day collection window