LCP
Largest Contentful Paint
3.8s
Needs Improvement
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Modernize JavaScript Build Target
How to optimize circles.life
Modernize JavaScript Build Target
Medium Impact+5 points estimated
Why It Matters
Legacy JavaScript polyfills add 13KB of unnecessary code that modern browsers don't need.
How to Fix
Update Next.js config to target modern browsers by setting target: 'es2020' in next.config.js. Remove unnecessary polyfills from babel config. Use browserslist to exclude outdated browser versions if business requirements allow.
0Needs Improvement
What This Score Means
A score of 77 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
437ms
Needs Improvement
Good: < 200ms
Measures how quickly the page responds to user interactions
CLS
Cumulative Layout Shift
0.03
Good
Good: < 0.1
Measures visual stability - how much content shifts during page load
AI Performance Analysis
This Next.js site has moderate performance issues with a score of 77/100, but several critical problems are slowing down the user experience. The biggest issue is excessive JavaScript blocking the main thread for 480ms, causing a poor Time to Interactive of 7.0 seconds and making the site feel unresponsive to user clicks. The site is also loading 101KB of unused JavaScript code and has render-blocking CSS that could save 140ms if optimized. Focusing on code splitting to reduce unused JavaScript and deferring non-critical resources would significantly improve both the performance score and user experience.
Other Optimization Recommendations
Eliminate Render Blocking CSS
High Impact+8 points estimatedWhy It Matters:
Render blocking CSS is delaying First Contentful Paint by 150ms and preventing critical content from appearing.
How to Fix:
Use Next.js dynamic imports to code-split the CSS bundle. Inline critical CSS for above-the-fold content using next/head. Move non-critical styles to load asynchronously with media='print' then switch to 'all' onload.
Reduce Unused JavaScript Bundles
High Impact+12 points estimatedWhy It Matters:
101KB of unused JavaScript is increasing bundle size and blocking the main thread unnecessarily.
How to Fix:
Implement dynamic imports in Next.js for components not needed on initial load. Use React.lazy() and Suspense to code-split heavy components. Analyze bundle with @next/bundle-analyzer and remove unused dependencies from package.json.
Keep Your Site Fast After Optimization
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Related Performance Analyses
More Next.js Speed Tests
Next.js Performance Resources
Optimize Image Sizing and Delivery
The corridor shield image is 48KB larger than needed for its display dimensions.
Eliminate Render-Blocking CSS Resources
CSS files are blocking initial page render and delaying LCP by 600ms.
Add fetchpriority=high to LCP Image
The LCP element (background texture SVG) lacks priority hints, delaying critical resource loading.
Reduce JavaScript Execution Time
3.5 seconds of JavaScript execution time is blocking the main thread and causing 2.5 seconds of Total Blocking Time.