LCP
Largest Contentful Paint
6.0s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Eliminate Render Blocking CSS
How to optimize plus.nl
Generic SiteScore: 65/100Analyzed January 2026
Eliminate Render Blocking CSS
High Impact+25 points estimated
Why It Matters
Render blocking CSS is delaying First Contentful Paint by 4.6 seconds, severely impacting page load performance.
How to Fix
Inline critical CSS for above-the-fold content directly in the HTML head. Use media queries to defer non-critical CSS like print styles. Minify and combine the largest CSS files (CloneOfOutSystemsMaps.Styles.ImagesCSS.css at 617KB) to reduce transfer size.
0Needs Improvement
What This Score Means
A score of 65 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
46ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.09
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This website has poor performance with a score of 65/100, primarily due to render-blocking CSS files that are delaying the initial page display by 4.6 seconds. The biggest issue is a massive 617KB CSS file that's preventing content from appearing quickly, causing both First Contentful Paint and Largest Contentful Paint to suffer at 4.7 and 6.0 seconds respectively. The site could see significant improvements by minifying CSS (saving 20KB), removing unused CSS rules (saving 115KB), and optimizing font loading with proper display settings. Additionally, compressing images better and adding explicit width/height attributes would further enhance the user experience and Core Web Vitals scores.
Other Optimization Recommendations
Remove Unused CSS Rules
High Impact+15 points estimatedWhy It Matters:
115KB of unused CSS is adding 450ms to both LCP and FCP while wasting bandwidth.
How to Fix:
Use PurgeCSS or similar tools to remove unused rules from PLUS_OutSystemsUI_2_8_0.OutSystemsUI.css (90% unused). Split CSS into page-specific bundles instead of loading everything globally. Audit theme CSS files to remove legacy styles no longer needed.
Add Image Dimensions and Optimize
Medium Impact+8 points estimatedWhy It Matters:
Missing image dimensions cause layout shifts while unoptimized images delay LCP by 250ms.
How to Fix:
Add explicit width and height attributes to all banner images (ZWILLING, Katja, folder banners). Increase compression on recipe images to save 100KB total transfer size. Use responsive images with srcset for different screen sizes.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Add Image Dimensions and Optimize
Missing image dimensions cause layout shifts while unoptimized images delay LCP by 250ms.
Remove Unused CSS Rules
115KB of unused CSS is adding 450ms to both LCP and FCP while wasting bandwidth.
Add Image Dimensions Attributes
Missing width/height attributes cause layout shifts as images load, hurting user experience and CLS scores.
Eliminate Unused JavaScript Code
242 KiB of unused JavaScript delays LCP by 1.35 seconds and blocks critical rendering.
Frequently Asked Questions
Keep Your Site Fast After Optimization
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