LCP
Largest Contentful Paint
7.1s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize JavaScript Bundle Loading
How to optimize harlowe.eu
Shopify SiteScore: 53/100Analyzed January 2026
Optimize JavaScript Bundle Loading
Medium Impact+8 points estimated
Why It Matters
Heavy JavaScript execution (2.0s) creates main thread blocking and forced reflows totaling 147ms.
How to Fix
Split your large components-CBmdcfh3.js bundle using React.lazy() and Suspense for code splitting. Implement dynamic imports for non-critical Shopify app components. Use React.memo() to prevent unnecessary re-renders that trigger layout recalculations in your product recommendation components.
0Needs Improvement
What This Score Means
A score of 53 falls in the "Needs Improvement" range (50-89). While it is better than poor (0-49), you should aim for 90+ to provide an optimal user experience and maximize SEO benefits.
This site is slower than approximately 35% of similar sites. The main issues affecting performance are image optimization, JavaScript execution time, and layout stability.
Addressing these issues could improve your conversion rate by 15-20% and boost your search engine rankings.
Core Web Vitals Analysis
INP
Interaction to Next Paint
243ms
Needs Improvement
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.05
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This Shopify/React site has poor performance with a score of 53/100. The biggest problem is render-blocking CSS files that are delaying page loading by 600ms, combined with a slow initial server response that adds another 560ms of delay. The site is also experiencing forced reflows from JavaScript that query page geometry, causing layout thrashing and poor user experience. Fixing the render-blocking resources by deferring or inlining critical CSS, optimizing server response time, and addressing the JavaScript performance issues could improve loading speeds by over 1 second and significantly boost the performance score.
Other Optimization Recommendations
Eliminate Render-Blocking CSS Resources
High Impact+12 points estimatedWhy It Matters:
Critical CSS files are blocking page render by 600ms, directly delaying both FCP and LCP.
How to Fix:
In your Shopify theme, inline critical CSS for above-the-fold content directly in the <head>. Use Shopify's liquid {% style %} tags to inline essential styles. Defer non-critical CSS like SanityModules-B_l4pjL9.css and root-BWvG-ZxC.css using media='print' onload='this.media="all"' technique.
Remove Page Redirects Chain
High Impact+15 points estimatedWhy It Matters:
Multiple redirects add 760ms delay before any content can load, significantly hurting all Core Web Vitals.
How to Fix:
Update your domain configuration to serve https://harlowe.eu/en-eu directly without redirecting from https://harlowe.eu/. Configure your Shopify domain settings or CDN to point directly to the final URL. Update all internal links and canonical URLs to use the final destination.
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Related Performance Analyses
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Shopify Performance Resources
Remove Page Redirects Chain
Multiple redirects add 760ms delay before any content can load, significantly hurting all Core Web Vitals.
Eliminate Render-Blocking CSS Resources
Critical CSS files are blocking page render by 600ms, directly delaying both FCP and LCP.
Optimize Layout Stability Issues
Forced reflows totaling 233ms are causing layout shifts and blocking user interactions, hurting Core Web Vitals.
Reduce Unused JavaScript Dramatically
831 KiB of unused JavaScript is wasting 750ms of load time and significantly impacting LCP performance.
Frequently Asked Questions
Keep Your Site Fast After Optimization
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