TL;DR
Faster sites sell more, rank higher, and make both users and your back-office team happier. Even hundredths of a second affect conversions and churn. Our approach is simple: measure, optimize, load-test, and monitor continuously.
Every second is money
Shaving off fractions of a second lifts conversions and average order value. After three seconds of waiting, most visitors leave—and the ad budget you paid for that traffic goes with them.
What to measure — webPCstudio benchmarks
- Time To First Byte (TTFB) — target under 200 ms; above 500 ms slows everything else.
- First Contentful Paint (FCP) — first visible content; target under 1.8 s.
- Largest Contentful Paint (LCP) — largest above-the-fold element; target under 2.5 s.
- Interaction to Next Paint (INP) — interface reaction time; target under 200 ms.
Why speed boosts SEO
Speed is a technical quality signal. Faster pages are crawled and indexed more efficiently, bounce rates drop, and depth of visit rises. Improving Core Web Vitals helps win rankings when content and links are equal.
User experience first
Shoppers expect instant response. Common bottlenecks include:
- slow first paint of the above-the-fold area
- cart, filters, and search freezing during interaction
- oversized images and unnecessary JavaScript
Fixing these directly raises conversion and repeat purchases.
Be ready for peaks without failures
Black Friday, social promos, ad spikes—the site must hold the load exactly then. Load tests and a prepared infrastructure protect your most profitable traffic.
The admin panel is UX too
Slow back office slows business: adding products, updating prices, processing orders. Optimizing the admin saves hours of waiting and removes seasonal bottlenecks.
webPCstudio’s 30-day action plan
Days 1–10 — audit
- Capture Core Web Vitals and server response times.
- Profile code and database queries; map “slow” resources.
Days 11–20 — quick wins
- Enable and tune caching; optimize images; ship critical CSS.
- Defer scripts; remove redundant libraries.
Days 21–30 — infrastructure and load
- HTTP cache and proxy; PHP and OPcache tuning; database optimization.
- Modern media formats; load testing and alerting; continuous monitoring.
Technical checklist
Server & network
- Low DB latency, response compression, modern protocols.
- Correct cache headers and sensible TTL control.
Application
- Minified CSS/JS; prioritize visible components.
- Lazy-init heavy widgets.
Database
- Proper indexes for catalog and search; eliminate N+1 queries.
- Cache frequent reads.
Media
- WEBP/AVIF, responsive sizes, lazy-load offscreen images.
Analytics
- Fewer third-party trackers, load late, consider server-side where appropriate.
What we do for PrestaShop and other CMSs
- Architect for traffic peaks; multi-layer caching for catalog and cart.
- Template and module optimization; remove duplicated queries.
- Production-safe profiling without performance loss.
- Dashboards and alerts for Core Web Vitals thresholds.
- Team training: content and banners without speed penalties.
Expected outcomes
- Lower TTFB; improved FCP and LCP to targets.
- INP under 200 ms; higher conversion and organic traffic.
- Stable operation during ad waves.
Getting started with webPCstudio
Contact us and share a test environment plus metrics access. In 2-3 days we deliver a short priorities report with quick wins, align a two-week work plan, and at month-end show “before vs after” metrics with quarterly recommendations.