Skenované 10. júla 2026
Zoradené podľa dopadu na skóre — každá oprava posunie celkové hodnotenie nahor.
Váha: 25% · 9 prešlo · 2 upozornenia · 5 zlyhalo · 1 SPA (overte manuálne)
Prečo 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).
Ako to opraviť: 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.
Dôkaz: PSI-lab · Spoľahlivosť: high
Čo sme zistili: 5.02s (good: <2.5s) — Core Web Vital FAILING
Prečo 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).
Prečo 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.
Ako to opraviť: 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.
Dôkaz: PSI-lab · Spoľahlivosť: high
Čo sme zistili: 14.4 MB, 147 requests — too heavy!
Prečo 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.
Prečo 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.
Ako to opraviť: 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.
Dôkaz: PSI-lab · Spoľahlivosť: low
Čo sme zistili: 867 KB wasted on unused code!
Prečo 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: Táto kontrola používa heuristickú detekciu a môže vrátiť aj falošné pozitíva. Odporúčame manuálne overenie.
Prečo 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.
Ako to opraviť: 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.
Dôkaz: HTML-heuristic · Spoľahlivosť: high
Čo sme zistili: Only 5% of 22 scripts optimized — most are render-blocking
Prečo 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.
Prečo 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.
Ako to opraviť: 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.
Dôkaz: HTML-heuristic · Spoľahlivosť: high
Čo sme zistili: 39 CSS files — too many!
Prečo 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.
Prečo 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.
Ako to opraviť: 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"'>.
Dôkaz: PSI-lab · Spoľahlivosť: high
Čo sme zistili: 39 CSS files without critical CSS extraction
Prečo 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.
Prečo 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.
Ako to opraviť: 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.
Dôkaz: PSI-lab · Spoľahlivosť: high
Čo sme zistili: 6 external domains without preconnect
Prečo 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.
Ako to opraviť: Re-run the scan, or test directly at PageSpeed Insights. This metric needs a successful Lighthouse lab run.
Dôkaz: PSI-lab · Spoľahlivosť: high
Váš e-shop zatiaľ nespĺňa podmienky pre odznak Zulien Score. Získajte skóre 80+!
Váš e-shop prichádza o zákazníkov každý deň. Problémy vyššie vás stoja predaje.
| Kategória | Skóre | Váha | Chyby | Upozornenia | OK |
|---|---|---|---|---|---|
| Výkon | 67/100 | 25% | 5 | 2 | 9 |
| SEO | 87/100 | 20% | 1 | 4 | 19 |
| Bezpečnosť | 57/100 | 15% | 3 | 8 | 6 |
| Mobil | 67/100 | 10% | 1 | 8 | 7 |
| AI pripravenosť | 68/100 | 10% | 3 | 15 | 13 |
| GDPR | 71/100 | 10% | 1 | 6 | 7 |
| Zraniteľnosť | 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