Прискорення сайту

Прискорення сайту — це не одна галочка в PageSpeed Insights. Core Web Vitals (LCP, INP, CLS) впливають на ranking Google, вартість кліків у Google Ads і реальну конверсію: 53% mobile users leave if LCP > 3 seconds. Оптимізація швидкості сайту в QMarket — системний sprint: images, fonts, JS, server, CDN, third-party audit.

Page speed критичний для WordPress, WooCommerce, Tilda-migration legacy і custom apps. Ми не обіцяємо «100/100 lab score» — працюємо на green field data в CrUX і measurable business metrics. Нижче — типові bottlenecks, sprint process і зв’язка з технічним SEO.

7 причин повільного сайту

Що входить у оптимізацію швидкості сайту

• Audit: PSI, WebPageTest, Chrome DevTools, GSC CWV report
• LCP: hero image, server TTFB, preload critical assets
• INP: JS defer, third-party delay, main thread profiling
• CLS: width/height on images, embeds, font metrics
• WordPress: plugin audit, object cache, theme optimization
• CDN setup (Cloudflare or similar)
• Before/after report + monitoring plan

Core Web Vitals детально: LCP, INP, CLS

LCP (Largest Contentful Paint) — largest visible element load, usually hero image or H1 block. Fix path: optimize image, server TTFB <600ms, remove render-blocking, preload LCP resource, no lazy on LCP. Target: ≤2.5s field 75th percentile.

INP (Interaction to Next Paint) replaces FID — measures responsiveness to clicks/taps. Culprits: long JavaScript tasks, heavy React hydration, sync third-party scripts. Fix: code split, defer non-critical JS, web workers rare, break up long tasks. Target: ≤200ms.

CLS (Cumulative Layout Shift) — visual stability. Images without width/height, ads, late fonts, cookie banners pushing content. Fix: aspect-ratio CSS, reserved ad slots, font-display swap with metric-matched fallback. Target: ≤0.1.

Page Speed vs business metrics

Lab PageSpeed 100 не гарантує sales. Field data (CrUX) — what Google ranking uses. QMarket tracks both + GA4: correlation speed quartile vs bounce and conversion. Often fixing LCP alone moves needle; sometimes INP on form-heavy pages.

Google Ads Quality Score includes landing experience — slow mobile landing raises CPC. Ads + speed joint ROI case common. SEO: CWV pass — tiebreaker in competitive SERPs per Google statements.

Ongoing regression: new plugin, marketing adds pixel, Black Friday banner — CWV slip. Support retainer includes monthly PSI check and alert if CrUX degrades.

WordPress-specific оптимізація швидкості сайту

Plugin triage: deactivate suspect, measure, delete. Common removals: social feed auto, related posts heavy query, old slider. Use Query Monitor find slow hooks. Object cache Redis drop DB queries 30–50%.

Theme: block themes lighter than classic + page builder. Database cleanup: revisions limit, transients flush, wp-cron on real cron. Image plugins: ShortPixel/Imagify bulk WebP — not manual one-by-one.

Hosting upgrade path: if TTFB >800ms after optimization — server bottleneck. Move to better VPS before micro-optimizing CSS. New WP builds include performance budget from design phase.

CDN, caching і security headers

Cloudflare free: CDN static assets, Brotli, minify cautiously (test), Always HTTPS, HSTS. Page Rules or Cache Rules for HTML careful — dynamic cart/checkout no-cache. APO for WordPress — significant TTFB win globally.

Browser cache: long max-age static assets hash in filename. Server cache: LiteSpeed or Nginx fastcgi_cache for anonymous HTML. Vary header correct for mobile/desktop if different (prefer responsive one URL).

Security headers bonus: CSP reduces XSS risk; doesn't hurt speed if configured right. HTTP/3 QUIC — enable if host supports. All part of technical SEO foundation.