Why Core Web Vitals matter
Google's page experience signals directly influence rankings. A site that scores well is genuinely pleasant to use.
The three metrics
LCP — how quickly main content loads. Target: under 2.5s. CLS — visual stability. Target: under 0.1. INP — responsiveness to input. Target: under 200ms.
The fixes that move the needle
- Use next/image for automatic optimisation
- Preload the LCP element
- Defer non-critical JavaScript
- Use content-visibility: auto on below-the-fold sections
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