Guides / Performance

How to improve website Core Web Vitals

Focus on LCP, INP, and CLS with practical front-end actions.

Updated 2026-08-24

The three metrics that matter most

  • LCP: largest contentful paint — optimize hero images and server response.
  • INP: interaction responsiveness — reduce long tasks and heavy JS.
  • CLS: layout shift — reserve space for images and ads.

High-impact actions

  1. Compress and correctly size images.
  2. Avoid layout jumps from late-loading fonts and embeds.
  3. Split rarely used JavaScript.
  4. Cache static assets.

Measure honestly

Lab scores help, but field data from real users is the truth.

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