Scanned on October 8, 2026
Your site works reasonably well but has security gaps to close. Immediately enable HTTPS protection (HSTS) in your server settings. Bright spot: your SEO and accessibility are performing well.
Every problem found, sorted by how much fixing it helps and how much work the fix takes. Start with the quick wins.
High impact, little work. Do these first.
High impact, but the fix needs planning.
+7 more
Lower impact, quick to do.
+12 more
Lower impact and more work. Plan them once the rest is done.
+42 more
Weight: 25% · 10 passed · 5 warnings · 2 failed · 2 SPA (verify manually)
Why it matters: Pages over 3 MB take 12+ seconds on 3G. The average e-commerce page is around 2 MB — you're well above that. Even small latency increases measurably reduce sales.
How to fix: 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.
Evidence: PSI-lab · Confidence: high
What we found: 4.2 MB, 85 requests — too heavy!
Why it matters: Pages over 3 MB take 12+ seconds on 3G. The average e-commerce page is around 2 MB — you're well above that. Even small latency increases measurably reduce sales.
Why it matters: 5 render-blocking scripts can add 1-3 seconds to page load. Each synchronous script creates a sequential download-parse-execute chain.
How to fix: Add defer or async to all <script src='...'> tags. Render-blocking scripts are a leading cause of slow FCP. Defer maintains execution order, async does not.
Evidence: HTML-heuristic · Confidence: high
What we found: Only 29% of 7 scripts optimized — most are render-blocking
Why it matters: 5 render-blocking scripts can add 1-3 seconds to page load. Each synchronous script creates a sequential download-parse-execute chain.
Why it matters: Measured on a first load with no interaction, so scripts gated behind cookie consent don't count against you here. The 600 KB bar is best practice, not the cohort average: the shops we benchmarked have a median of 1 270 KB, and the best of them (a category winner that won on mobile) ships 410 KB.
How to fix: Split the bundle so a product page doesn't load checkout and account code. Defer third-party scripts until interaction. Drop unused plugin bundles — on most shops these outweigh your own code.
Evidence: PSI-lab · 860 KB JavaScript · Confidence: high
What we found: 860 KB — over the 600 KB budget, but below the 1270 KB median of the award-winning shops we benchmarked
Why it matters: Measured on a first load with no interaction, so scripts gated behind cookie consent don't count against you here. The 600 KB bar is best practice, not the cohort average: the shops we benchmarked have a median of 1 270 KB, and the best of them (a category winner that won on mobile) ships 410 KB.
Why it matters: The 80-request bar is best practice; the benchmarked cohort median is 140 and the best shop manages 37. Being under the median is not the same as being fast.
How to fix: Bundle CSS/JS that always loads together, serve icons as a sprite or font rather than individual files, and lazy-load below-fold images so they aren't requested on load.
Evidence: PSI-lab · 85 requests · Confidence: high
What we found: 85 requests — over the budget of 80, but at or below the median of the award-winning shops we benchmarked (140)
Why it matters: The 80-request bar is best practice; the benchmarked cohort median is 140 and the best shop manages 37. Being under the median is not the same as being fast.
Why it matters: Unused code is downloaded and parsed but never executed — pure waste. Removing it speeds up parse time and reduces bandwidth.
How to fix: Remove unused CSS with PurgeCSS or UnCSS. Code-split JavaScript so only needed code loads per page. Audit plugins — each adds CSS/JS.
Evidence: PSI-lab · Confidence: low
What we found: 176 KB unused (CSS: 50 KB, JS: 126 KB)
Why it matters: Unused code is downloaded and parsed but never executed — pure waste. Removing it speeds up parse time and reduces bandwidth.
Note: This check uses heuristic detection and may produce false positives. Manual verification recommended.
Why it matters: Without lazy loading, ALL images download on page load — even those never scrolled to. On a product page with 20 images, lazy loading can save most of the initial download.
How to fix: Add loading='lazy' to all images below the fold. Keep the hero/LCP image eager-loaded. Native lazy loading is supported by all modern browsers.
Evidence: HTML-heuristic · Confidence: high
What we found: 4 images without lazy loading
Why it matters: Without lazy loading, ALL images download on page load — even those never scrolled to. On a product page with 20 images, lazy loading can save most of the initial download.
Why it matters: no-cache/no-store forces browsers to re-download resources on every visit. Repeat visitors load your entire site from scratch every time.
How to fix: Set appropriate cache headers: static assets should have max-age=31536000 with versioned filenames. HTML pages can use max-age=0 with ETag for revalidation.
Evidence: HTTP-header · Confidence: high
What we found: no-store, no-cache, must-revalidate, no-cache, private
Why it matters: no-cache/no-store forces browsers to re-download resources on every visit. Repeat visitors load your entire site from scratch every time.
Why it matters: We report this as unmeasured rather than as zero third parties, because those are very different findings.
How to fix: Re-run the scan, or check the third-party summary directly at PageSpeed Insights.
Evidence: PSI-lab · Confidence: high
How to fix: Re-run the scan, or test directly at PageSpeed Insights. This metric needs a successful Lighthouse lab run.
Evidence: PSI-lab · Confidence: high
Your store doesn't qualify for the Zulien Score Badge yet. Score 80+ to earn it!
| Category | Score | Weight | Failures | Warnings | OK |
|---|---|---|---|---|---|
| Performance | 88/100 | 25% | 2 | 5 | 10 |
| SEO | 89/100 | 20% | 0 | 6 | 19 |
| Security | 60/100 | 15% | 2 | 7 | 8 |
| Mobile | 70/100 | 10% | 1 | 11 | 5 |
| AI Readiness | 55/100 | 10% | 4 | 24 | 7 |
| Legal & Compliance | 64/100 | 10% | 2 | 5 | 8 |
| Vulnerability | 57/100 | 10% | 5 | 5 | 6 |
| Accessibility / EAA | 86/100 | 10% | 0 | 2 | 6 |
Every problem found, sorted by how much fixing it helps and how much work the fix takes. Start with the quick wins.
High impact, little work. Do these first.
| Finding | Category | Effort |
|---|---|---|
| Admin Panel at Default URL | Vulnerability | quick fix |
| HTTP → HTTPS Redirect | Security | quick fix |
| HSTS (Strict-Transport-Security) | Security | quick fix |
| Consumer Dispute Resolution Links | Legal & Compliance | quick fix |
| DMARC Policy (Email Auth) | Vulnerability | quick fix |
High impact, but the fix needs planning.
| Finding | Category | Effort |
|---|---|---|
| Privacy Policy Page | Legal & Compliance | about a day |
| Known Vulnerabilities (CVE) | Vulnerability | project |
| Script Loading Strategy | Performance | about a day |
| Content-Security-Policy (CSP) | Security | about a day |
| Form Input Labels (WCAG 3.3.2) | Mobile | about a day |
| jQuery Version | Vulnerability | about a day |
| Mixed Content Resources | Vulnerability | about a day |
| Payment Page Security | Vulnerability | about a day |
| Total Page Weight | Performance | project |
| Extractable Answer Blocks | AI Readiness | project |
| Common Question Coverage | AI Readiness | project |
| Content-to-Boilerplate Ratio | AI Readiness | project |
Lower impact, quick to do.
| Finding | Category | Effort |
|---|---|---|
| Cache-Control Strategy | Performance | quick fix |
| Meta Description | SEO | quick fix |
| Twitter/X Cards | SEO | quick fix |
| Canonical URL Consistency | SEO | quick fix |
| CAA DNS Record | Security | quick fix |
| Referrer-Policy | Security | quick fix |
| Permissions-Policy | Security | quick fix |
| Cookie Security Flags | Security | quick fix |
| Subresource Integrity (SRI) | Security | quick fix |
| Theme Color | Mobile | quick fix |
| Text Overflow Handling | Mobile | quick fix |
| Print Stylesheet | Mobile | quick fix |
+5 more
Lower impact and more work. Plan them once the rest is done.
| Finding | Category | Effort |
|---|---|---|
| Lazy Loading | Performance | about a day |
| Image Format Optimization | SEO | about a day |
| Internal Linking | SEO | about a day |
| CDN / WAF Protection | Security | about a day |
| Touch Target Size | Mobile | about a day |
| Font Size Readability | Mobile | about a day |
| PWA Features | Mobile | about a day |
| Responsive Images (srcset) | Mobile | about a day |
| Mobile Sticky CTA | Mobile | about a day |
| Heading Hierarchy (WCAG 1.3.1) | Mobile | about a day |
| Link Text Quality (WCAG 2.4.4) | Mobile | about a day |
| Structured Data Foundation | AI Readiness | about a day |
+35 more
The full interactive version, with clickable links and the option to re-scan, is here:
https://score.zulien.sk/r/eponeshop.sk