LCP
Largest Contentful Paint
2.8s
Needs Improvement
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Update JavaScript Build Target
How to optimize dev.happythoughts.in
Update JavaScript Build Target
Medium Impact+2 points estimated
Why It Matters
Legacy JavaScript polyfills add 20KB of unnecessary code since modern browsers support these features natively.
How to Fix
Update your Next.js config to target modern browsers by setting target: 'es2017' or higher in next.config.js. Remove unnecessary polyfills from your babel configuration. Use browserslist to define supported browser versions and exclude outdated ones.
0Good
What This Score Means
A score of 92 falls in the "Good" 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
124ms
Good
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 Next.js site performs quite well with a score of 92/100, but there are some optimization opportunities to achieve excellent performance. The biggest issue is render-blocking CSS that's delaying both First Contentful Paint and Largest Contentful Paint by 300ms, causing the LCP to reach 2.8 seconds. The site is also carrying about 78 KiB of unused JavaScript code and using legacy JavaScript polyfills that aren't needed for modern browsers, which could save an additional 20 KiB. Addressing the render-blocking CSS by inlining critical styles or deferring non-critical CSS would provide the most immediate performance boost for your users.
Other Optimization Recommendations
Eliminate Render Blocking CSS
High Impact+4 points estimatedWhy It Matters:
The blocking CSS file is delaying both LCP and FCP by 300ms, directly impacting user experience.
How to Fix:
Use Next.js dynamic imports to code-split CSS or inline critical CSS in the <head>. Move non-critical styles to load after first paint using next/dynamic with ssr: false. Consider using CSS-in-JS libraries like styled-components for component-specific styles.
Remove Unused JavaScript Code
High Impact+3 points estimatedWhy It Matters:
79KB of unused JavaScript is delaying LCP by 350ms and consuming unnecessary bandwidth.
How to Fix:
Use Next.js bundle analyzer (@next/bundle-analyzer) to identify unused code. Implement dynamic imports for heavy components that aren't immediately needed. Enable tree-shaking by using named imports instead of default imports from libraries.
Keep Your Site Fast After Optimization
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Related Performance Analyses
More Next.js Speed Tests
Next.js Performance Resources
Fix Layout Shift Issues
CLS score of 0.123 caused by carousel and cookie banner shifting content during load.
Reduce JavaScript Bundle Size
Unused JavaScript totals 1.6MB and blocks main thread for 4.7 seconds, causing 630ms input delay.
Optimize Large Image Assets
Images consume over 22MB with the largest being 4.5MB, severely impacting LCP at 8.3 seconds.
Fix Critical Element Render Delay
The LCP element (H1 heading) has a massive 4.3 second render delay, severely impacting page load performance.