LCP
Largest Contentful Paint
6.6s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Reduce Unused JavaScript Payload
How to optimize gastouderbureausnoesje.nl
Reduce Unused JavaScript Payload
Medium Impact+8 points estimated
Why It Matters
Google Analytics and GTM are loading 138KB of unused code, slowing down page processing.
How to Fix
Configure Google Tag Manager to load only necessary tracking codes. Use WordPress plugins like Perfmatters to conditionally load GTM only on specific pages. Implement partytown or similar to move tracking scripts to web workers, preventing main thread blocking.
0Needs Improvement
What This Score Means
A score of 67 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
201ms
Needs Improvement
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.00
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This WordPress site has poor performance with a score of 67/100, indicating significant room for improvement. The biggest problem is an extremely slow Largest Contentful Paint of 6.6 seconds, which means visitors wait far too long to see the main content load. The primary culprit is an oversized image that's downloading 26KB more data than necessary because it's served at 668x667 pixels but only displayed at 322x320 pixels. Additionally, the site is loading 135KB of unused JavaScript from Google Tag Manager and has render-blocking resources that delay initial page rendering, making quick fixes around image optimization and JavaScript cleanup critical for better user experience.
Other Optimization Recommendations
Optimize Oversized Hero Image
High Impact+12 points estimatedWhy It Matters:
The main image is 27KB larger than needed and directly delays LCP by 150ms.
How to Fix:
Resize the hero image from 668x667 to 322x320 pixels to match display dimensions. Use WordPress responsive image sizes by updating your theme's functions.php to register proper image sizes. Consider using a plugin like EWWW Image Optimizer to automatically serve correctly sized images.
Defer Render Blocking Resources
High Impact+10 points estimatedWhy It Matters:
GDPR compliance scripts are blocking initial page render and delaying content visibility.
How to Fix:
Add async or defer attributes to the Complianz GDPR JavaScript file in wp-content/plugins/complianz-gdpr-premium/. Move the cookieblocker CSS to load after critical content using WordPress wp_enqueue_style with proper priority. Consider inlining critical CSS for above-the-fold content.
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Related Performance Analyses
More WordPress Speed Tests
WordPress Performance Resources
Defer Render Blocking Resources
GDPR compliance scripts are blocking initial page render and delaying content visibility.
Optimize Oversized Hero Image
The main image is 27KB larger than needed and directly delays LCP by 150ms.
Fix JavaScript Layout Thrashing
Forced reflows in your theme's script.js and Swiper library are causing 41ms of unnecessary layout calculations.
Optimize Google Tag Manager Scripts
Unused JavaScript from GTM and Google Analytics is wasting 133 KiB and blocking the main thread for 490ms.