SEOLocalPro
    Home
    Case StudiesPricingGuides
    Contact us
    1. Home
    2. Services
    3. Core Web Vitals & Speed

    Service — Core Web Vitals

    A fast site
    ranks better and converts more

    Core Web Vitals (LCP, CLS, INP) have been an official Google ranking factor since 2021. A slow site loses rankings AND customers. We diagnose, we fix, we prove it with numbers.

    Request a speed audit

    What we optimize

    The 6 technical axes that move PageSpeed Insights from red to green.

    LCP — Largest Contentful Paint

    Display time of the largest visible element. Target < 2.5s. We optimize images, fonts, server-side rendering and CDN.

    CLS — Cumulative Layout Shift

    Visual stability during loading. Target < 0.1. We fix image, iframe, banner and web font dimensions.

    INP — Interaction to Next Paint

    Responsiveness to clicks, taps, key presses. Target < 200ms. We lighten JavaScript, split long tasks, debounce handlers.

    Next-gen images

    WebP/AVIF conversion, native lazy loading, LCP image preloading, responsive srcset. Often the quickest win.

    JavaScript & bundle splitting

    Dead code removal, route-based code splitting, tree shaking, deferring third-party scripts (analytics, chat, pixels).

    Continuous monitoring

    Search Console Core Web Vitals integration, Real User Monitoring, alerts on regression after each deploy.

    What you receive

    A before/after report with Lighthouse captures, PageSpeed Insights and field data (CrUX). Every optimization is quantified.

    • Detailed Lighthouse & PageSpeed Insights audit
    • Action plan prioritized by impact / effort
    • Technical implementation (or dev guidance)
    • Before/after report with measured gains
    • Search Console Core Web Vitals integration
    • Real User Monitoring (RUM) setup
    • Automatic alerts on regression

    Included in Growth and Scale-up plans

    Core Web Vitals optimization is part of our full offer. For a standalone diagnosis without subscription, contact us for a speed-only audit.

    See plans Speed audit only

    Our other services

    SEO Audit SEO Website Creation SEO Migration SEO Maintenance

    Is your site fast enough?

    Free speed audit — we tell you exactly where you stand and what it costs you in lost rankings.

    Launch my speed audit
    SEOLocalPro
    Mentions légalesContact

    © 2026 SEOLocalPro