> ## Documentation Index
> Fetch the complete documentation index at: https://kw.hellenictechnologies.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PageSpeed

> Core Web Vitals optimisation and PageSpeed improvements.

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.

## 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

## 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