LCP
Largest Contentful Paint
6.2s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Defer Render-Blocking CSS
How to optimize learn.wowlearnings.org
Defer Render-Blocking CSS
Medium Impact+8 points estimated
Why It Matters
CSS files are blocking initial render and delaying LCP by 300ms.
How to Fix
Use Next.js built-in CSS optimization by splitting critical CSS. Load non-critical styles with media='print' then switch to media='all' onload. Move above-the-fold styles inline and defer the rest using next/head component.
0Needs Improvement
What This Score Means
A score of 63 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
210ms
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 Next.js/React site has poor performance with a score of 63/100, indicating significant user experience issues. The biggest problem is an extremely slow Largest Contentful Paint of 6.2 seconds, caused primarily by 281KB of unused JavaScript code that's blocking the page from rendering quickly. The site is also suffering from forced reflows (layout thrashing) that waste nearly 100ms of processing time, and render-blocking CSS files that could save an additional 310ms if properly optimized. Removing unused JavaScript, deferring non-critical CSS, and fixing the JavaScript performance issues could potentially improve the score by 25+ points and dramatically reduce load times for users.
Other Optimization Recommendations
Eliminate Unused JavaScript Code
High Impact+18 points estimatedWhy It Matters:
281 KiB of unused JavaScript delays LCP by 900ms and blocks page interactivity.
How to Fix:
Use Next.js dynamic imports for code splitting: import dynamic from 'next/dynamic'. Defer Google Analytics loading until after page interaction. Configure webpack-bundle-analyzer to identify and remove unused chunks in your Next.js build process.
Fix Forced Reflow Issues
High Impact+12 points estimatedWhy It Matters:
JavaScript is forcing layout recalculations 97ms after DOM changes, blocking user interactions.
How to Fix:
Batch DOM reads and writes in your React components. Use useLayoutEffect instead of useEffect for DOM measurements. Cache computed styles and dimensions to avoid repeated geometric property queries in your Next.js components.
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Related Performance Analyses
More Next.js Speed Tests
Next.js Performance Resources
Reduce JavaScript Bundle Size
655KB of unused JavaScript increases load time by 3.1 seconds and blocks main thread execution.
Optimize LCP Image Implementation
Resource load delay of 4,613ms for LCP image makes it undiscoverable and prevents fast loading.
Fix Server Response and Redirects
TTFB of 1,028ms and redirect chain waste 1,830ms, severely delaying LCP by 20+ seconds.
Optimize Cache Strategy
Poor caching configuration forces users to re-download resources on repeat visits, missing opportunities for faster load times.