pazarlama

Web Site Speed and SEO: Core Web Vitals Optimization Guide

Core Web Vitals optimization on tour operator websites: Guide to improving LCP, INP, and CLS metrics.

By Cem Bilgin · · 7 min read

Google's official ranking factor: Core Web Vitals. Three metrics, three targets — if you aren't in the green, you won't rank high.

Three Metrics

  • LCP (Largest Contentful Paint): Largest content under 2.5s.
  • INP (Interaction to Next Paint): Interaction response under 200ms.
  • CLS (Cumulative Layout Shift): Visual shift under 0.1.

LCP Improvement

  • Images in WebP/AVIF, right size.
  • Hero image `fetchpriority="high"`.
  • Font subset + `font-display: swap`.
  • Use a CDN.

INP Improvement

  • Lazy load 3rd-party scripts.
  • Keep JS bundle under 200KB.
  • Remove render-blocking scripts.

CLS Improvement

  • Assign width/height to images and iframes.
  • Reserve fixed space for advertisement area.
  • Local pre-loading for late-loading fonts.

Measurement Tools

PageSpeed Insights, Search Console "Core Web Vitals" report, CrUX real user data. Track all three regularly.

Sıkça Sorulan Sorular

How do I measure it on my existing site?
PageSpeed Insights — free, one click.