LCP
Largest Contentful Paint
6.6s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Eliminate Render Blocking Resources
How to optimize technik.museum.de
Eliminate Render Blocking Resources
Medium Impact+8 points estimated
Why It Matters
Three CSS files block initial page render, delaying First Contentful Paint by 700ms.
How to Fix
Inline critical CSS for above-the-fold content directly in the HTML head. Use media='print' onload technique to defer non-critical CSS like CookieMonster.css and swiper-bundle.min.css. Minify and combine remaining CSS files to reduce requests.
0Needs Improvement
What This Score Means
A score of 73 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
75ms
Good
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.01
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This website has moderate performance issues with a score of 73/100, but there are significant problems affecting user experience. The biggest issue is a 780ms delay caused by an unnecessary redirect from the non-www to www version of the site, combined with render-blocking CSS files that delay page rendering by 720ms. The site's Largest Contentful Paint takes 6.6 seconds, primarily due to oversized images that could be compressed to save over 3MB of data. Fixing the redirect, optimizing image compression, and deferring non-critical CSS could improve the performance score by 15-20 points and dramatically reduce load times for visitors.
Other Optimization Recommendations
Fix Redirect Chain Issue
High Impact+12 points estimatedWhy It Matters:
The redirect from technik-museum.de to www.technik-museum.de delays both LCP and FCP by 800ms each.
How to Fix:
Update all internal links and external references to point directly to https://www.technik-museum.de/. Configure your server to serve the www version directly instead of redirecting. Update DNS settings and any CDN configurations to eliminate the redirect chain.
Optimize Image Compression and Sizing
High Impact+15 points estimatedWhy It Matters:
Poor image optimization delays LCP by 2.65 seconds and wastes 3.4MB of bandwidth.
How to Fix:
Increase compression on WebP images - the exhibition images can be compressed 65-80% more without quality loss. Resize the group services image from 820x820 to match its 663x663 display size. Implement responsive images with proper srcset for different screen sizes.
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Related Performance Analyses
More Generic Speed Tests
Generic Performance Resources
Optimize Logo Image Delivery
The oversized logo image wastes 97 KiB and delays LCP by 450ms while being displayed much smaller than its actual size.
Remove Unused JavaScript Code
126 KiB of unused JavaScript from Google Analytics and GTM delays LCP by 900ms and wastes bandwidth.
Eliminate Render Blocking Resources
Render blocking CSS and fonts delay LCP and FCP by 1,050ms, preventing users from seeing content immediately.
Fix Image Sizing and Compression
Award images are oversized by 441KB and lack explicit dimensions, causing layout shifts.