Core Web Vitals remain one of the strongest ranking signals for 2025. This guide breaks down the targets and fixes that consistently move real-user metrics.
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LCP: target under 2.5s
Focus on server response time, compress images, and load the hero content fast. Use modern formats like WebP and reduce render-blocking CSS.
INP: target under 200ms
Interaction to Next Paint measures responsiveness. Split large bundles, defer non-critical scripts, and avoid long main-thread tasks.
CLS: target under 0.1
Reserve space for images, ads, and embedded content. Use font-display: swap and set explicit width and height on media assets.
Diagnose with real user monitoring
Lab tests are not enough. Use Chrome UX Report, Google Search Console, and real-user monitoring tools for accurate signals.
Fix the top 10 worst pages first
Score pages by traffic and revenue impact. Optimize the most valuable pages before tuning long-tail content.
Compress, resize to display dimensions, and serve responsive sources. Lazy-load below the fold.
Reduce JavaScript and third-party scripts
Audit scripts quarterly. Remove unused trackers, defer chat widgets, and bundle only what is necessary.
Set a strict limit on total JS weight, image weight, and font requests so regressions do not sneak in.
The bottom line
Core Web Vitals are a discipline. Build a performance pipeline so you ship fast and stay fast.
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