Critical Bottlenecks
Diagnostic data extracted directly from the DOM architecture of zola.ro
The browser parser is halted for 2.4 seconds while evaluating third-party tracking scripts. The main thread is locked, causing the screen to remain blank on 4G connections.
// Detected in theme.liquid (Line 42)
<script src="https://connect.facebook.net/en_US/fbevents.js"></script>
<script src="https://static.klaviyo.com/onsite/js/klaviyo.js"></script>
Remediation Strategy
Inject the defer attribute into all non-critical external scripts. For Facebook Pixel, migrate the execution to Shopify Web Pixels API (Customer Events) to completely offload it from the main thread.
The Largest Contentful Paint (LCP) element is an image, but it's not preloaded. The browser discovers it late in the waterfall, delaying the perceived load time.
// Detected on Hero Section
<img src="//cdn.shopify.com/.../banner.jpg" loading="lazy">
// Required Fix
<img src="//cdn.shopify.com/.../banner.webp" fetchpriority="high">
Remediation Strategy
Remove the loading="lazy" attribute from the LCP image. Convert the asset to Next-Gen WebP format and add fetchpriority="high" to instruct the browser to fetch it immediately.
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