Sayt tezligi — SEO #1 omillaridan. 1 soniya sekinlik = 7% konversiya yo'qotish. 10 ta amaliy texnika:
1. Rasm optimizatsiyasi
JPG/PNG → WebP/AVIF (30-80% kichikroq). Squoosh.app, ImageMagick. WordPress: Smush, ShortPixel. Lazy loading: img loading="lazy".
2. CDN — Cloudflare
Bepul plan barcha funksiya bilan. Sayt 2-5x tezroq. Global edge cache. DDoS himoya.
3. Brotli compression
Gzip'dan 20% tezroq. Nginx: brotli on. Apache: mod_brotli. Cloudflare: avtomatik.
4. HTTP/2 va HTTP/3
Multiplexing, header compression. Server konfiguratsiyada yoqing. Cloudflare default.
5. CSS critical inline
Sahifaning birinchi ekrandagi CSS HTML ichida. Qolgani async yuklanadi. Critical CSS Generator (online).
6. JavaScript defer/async
<script defer src="app.js"> — HTML parse'dan keyin. Async — parallel. Render-blocking eliminate.
7. Database optimizatsiya
Indekslarni qo'shing — slow query log tahlil. EXPLAIN orqali aniq. WordPress: query monitor.
8. Caching
Page cache (full HTML), object cache (Memcached/Redis), opcode cache (OPcache PHP). 10-100x tezroq.
9. DNS prefetch va preconnect
<link rel="preconnect" href="https://fonts.googleapis.com"> — TLS handshake oldindan.
10. Server response time
TTFB (Time To First Byte) <600ms. PHP-FPM tuning, MySQL slow log, NVMe SSD.
11. Lazy load video
YouTube embed sekin yuklayotadi. Plyr, lite-youtube — placeholder bilan. Click bo'lganda yuklanadi.
12. Fontni preload
<link rel="preload" as="font" href="font.woff2" crossorigin>. font-display: swap — text avval, font keyin.
13. Code split (modern frontend)
React, Vue, Svelte — chunk'larga bo'lish. Sahifa kerakli kodni yuklaydi. Webpack, Vite.
14. Image sizes attribute
<img sizes="(max-width: 600px) 100vw, 50vw" srcset="...">. Mobil — kichik, desktop — katta variant.
15. 3rd party script audit
Google Analytics, Facebook Pixel, chat widget — har biri 100-300ms qo'shadi. Faqat kerakli ishlatish.
O'lchash
PageSpeed Insights (pagespeed.web.dev), GTmetrix, WebPageTest. Lighthouse Performance 90+ — yashil zona.
Sayt.uz misol
Performance 95, LCP 1.8s, INP 120ms, CLS 0.03. Cloudflare + WebP + critical CSS + DB index.