Core Web Vitals — Google'ning 3 ta asosiy sayt tezligi ko'rsatkichi. 2021'dan beri SEO ranking faktori. Yaxshi natijalar = yuqori o'rin, yomon = pastga tushish.
LCP (Largest Contentful Paint)
Sahifaning eng katta elementi (hero rasm yoki sarlavha) qachon ko'rinadi. Yaxshi: <2.5s, o'rta: 2.5-4s, yomon: >4s. Yaxshilash: rasmlarni siqish, lazy loading olib tashlash hero uchun, CDN, fontni preload.
INP (Interaction to Next Paint)
2024'dan FID o'rniga keldi. Foydalanuvchi click qilganda javob vaqti. Yaxshi: <200ms, yomon: >500ms. Yaxshilash: JS code split, debounce, web workers, third-party script optimallashtirish.
CLS (Cumulative Layout Shift)
Sahifa yuklanayotganda elementlar siljishi. Reklama yuklanib kontent pastga turtib yuborganda — yomon CLS. Yaxshi: <0.1, yomon: >0.25. Tuzatish: rasm/video uchun width/height, font-display: optional, dinamik kontent skeleton bilan.
Tekshirish vositalari
1) PageSpeed Insights (pagespeed.web.dev) — bepul. 2) Chrome DevTools → Lighthouse. 3) Search Console → Page Experience. 4) Real user data: web-vitals JS library, Sentry, NewRelic.
Mobil vs Desktop
Mobil ko'rsatkichlar Google uchun muhimroq. 70%+ trafik mobil — shu yerdan optimallashing.
Sayt.uz misol
Sayt.uz Core Web Vitals: LCP 1.8s, INP 120ms, CLS 0.03 — barchasi yashil. Cloudflare CDN + WebP rasmlar + critical CSS inline natija.
Yaxshilash 7 qadami
1) Rasmlarni WebP/AVIF. 2) Lazy loading. 3) CSS critical inline. 4) JS defer/async. 5) CDN. 6) Cache headers. 7) Server response <600ms.