Skenováno July 10, 2026
Seřazeno podle dopadu na skóre — každá oprava posune celkové hodnocení nahoru.
Váha: 25% · 9 prošlo · 2 upozornění · 5 selhalo · 1 SPA (ověřte ručně)
Proč na tom záleží: LCP >4s fails Core Web Vitals — Google actively demotes these pages. Each 100ms improvement in LCP correlates with 1.7% higher conversion rate (Vodafone study).
Jak to opravit: Urgent: your largest content element loads too slowly. 1) Preload hero image, 2) Convert to WebP/AVIF, 3) Serve from CDN, 4) Remove render-blocking JS before it, 5) Consider lazy loading all other images.
Důkaz: PSI-lab · Spolehlivost: high
Co jsme zjistili: 5.02s (good: <2.5s) — Core Web Vital FAILING
Proč na tom záleží: LCP >4s fails Core Web Vitals — Google actively demotes these pages. Each 100ms improvement in LCP correlates with 1.7% higher conversion rate (Vodafone study).
Proč na tom záleží: Pages over 3 MB take 12+ seconds on 3G. The average e-commerce page is 2.2 MB — you're well above that. Amazon found every 100ms of latency costs 1% of sales.
Jak to opravit: Critical: your page is over 3 MB. 1) Convert all images to WebP/AVIF, 2) Lazy load everything below the fold, 3) Remove unused plugins, 4) Combine and minify CSS/JS, 5) Enable brotli compression.
Důkaz: PSI-lab · Spolehlivost: high
Co jsme zjistili: 14.4 MB, 147 requests — too heavy!
Proč na tom záleží: Pages over 3 MB take 12+ seconds on 3G. The average e-commerce page is 2.2 MB — you're well above that. Amazon found every 100ms of latency costs 1% of sales.
Proč na tom záleží: Over 200 KB of unused code significantly slows parsing and execution. This is one of the easiest performance wins — removing dead code requires no trade-offs.
Jak to opravit: You're loading 867 KB of code that isn't used on this page. 1) Audit plugins and remove unused ones, 2) Use code-splitting for page-specific JS, 3) Run PurgeCSS on your stylesheets.
Důkaz: PSI-lab · Spolehlivost: low
Co jsme zjistili: 867 KB wasted on unused code!
Proč na tom záleží: Over 200 KB of unused code significantly slows parsing and execution. This is one of the easiest performance wins — removing dead code requires no trade-offs.
Poznámka: Tato kontrola používá heuristickou detekci a může vrátit i falešně pozitivní výsledky. Doporučujeme ruční ověření.
Proč na tom záleží: 21 render-blocking scripts can add 1-3 seconds to page load. Each synchronous script creates a sequential download-parse-execute chain.
Jak to opravit: Add defer or async to all <script src='...'> tags. Render-blocking scripts are the #1 cause of slow FCP. Defer maintains execution order, async does not.
Důkaz: HTML-heuristic · Spolehlivost: high
Co jsme zjistili: Only 5% of 22 scripts optimized — most are render-blocking
Proč na tom záleží: 21 render-blocking scripts can add 1-3 seconds to page load. Each synchronous script creates a sequential download-parse-execute chain.
Proč na tom záleží: Each CSS file blocks rendering. With 39 files, the browser must download all of them before painting anything. This can add 1-2+ seconds on mobile networks.
Jak to opravit: Bundle your CSS files into 1-3 files maximum. Use a build tool (Webpack, Vite, Gulp) to concatenate and minify. Critical CSS should be inlined, the rest deferred.
Důkaz: HTML-heuristic · Spolehlivost: high
Co jsme zjistili: 39 CSS files — too many!
Proč na tom záleží: Each CSS file blocks rendering. With 39 files, the browser must download all of them before painting anything. This can add 1-2+ seconds on mobile networks.
Proč na tom záleží: Render-blocking CSS delays first paint. Inlining critical CSS eliminates the render-blocking round trip — the biggest FCP improvement for CSS-heavy sites.
Jak to opravit: Extract critical above-the-fold CSS and inline it in <head>. Load remaining CSS asynchronously: <link rel='preload' href='styles.css' as='style' onload='this.rel="stylesheet"'>.
Důkaz: PSI-lab · Spolehlivost: high
Co jsme zjistili: 39 CSS files without critical CSS extraction
Proč na tom záleží: Render-blocking CSS delays first paint. Inlining critical CSS eliminates the render-blocking round trip — the biggest FCP improvement for CSS-heavy sites.
Proč na tom záleží: Third-party connections require DNS lookup, TCP handshake, and TLS negotiation. Preconnect performs these in parallel with HTML parsing, saving 100-300ms per origin.
Jak to opravit: Add <link rel='preconnect'> for key third-party domains: cdn-cookieyes.com, www.googletagmanager.com, www.google.com. Preconnect saves 100-300ms per domain by starting DNS+TCP+TLS early.
Důkaz: PSI-lab · Spolehlivost: high
Co jsme zjistili: 6 external domains without preconnect
Proč na tom záleží: Third-party connections require DNS lookup, TCP handshake, and TLS negotiation. Preconnect performs these in parallel with HTML parsing, saving 100-300ms per origin.
Jak to opravit: Re-run the scan, or test directly at PageSpeed Insights. This metric needs a successful Lighthouse lab run.
Důkaz: PSI-lab · Spolehlivost: high
Váš e-shop zatím nesplňuje podmínky pro odznak Zulien Score. Získejte skóre 80+!
Váš e-shop přichází o zákazníky každý den. Problémy výše vás stojí prodeje.
| Kategória | Skóre | Váha | Chyby | Upozornenia | OK |
|---|---|---|---|---|---|
| Performance | 67/100 | 25% | 5 | 2 | 9 |
| SEO | 87/100 | 20% | 1 | 4 | 19 |
| Security | 57/100 | 15% | 3 | 8 | 6 |
| Mobile | 67/100 | 10% | 1 | 8 | 7 |
| AI Readiness | 68/100 | 10% | 3 | 15 | 13 |
| GDPR | 71/100 | 10% | 1 | 6 | 7 |
| Vulnerability | 48/100 | 10% | 6 | 6 | 6 |
Plnú interaktívnu verziu s klikateľnými odkazmi a možnosťou opätovného skenu nájdete tu:
https://score.zulien.sk/r/hype.sk