LCP
Largest Contentful Paint
6.2s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Remove Unused JavaScript Code
How to optimize learn.wowlearnings.org
Remove Unused JavaScript Code
High Impact+12 points estimated
Why It Matters
296KB of unused JavaScript is delaying LCP by 900ms and blocking the main thread.
How to Fix
Enable Next.js tree-shaking by using ES6 imports and avoiding default imports for large libraries. Remove Google Tag Manager or defer it using next/script with strategy='afterInteractive'. Use Next.js bundle analyzer to identify and eliminate unused chunks.
0Poor
What This Score Means
A score of 48 falls in the "Poor" 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
342ms
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 website has poor performance with a score of 48/100, indicating significant user experience issues. The biggest problem is excessive JavaScript that's blocking the page from becoming interactive, taking a painful 9.3 seconds and wasting 296 KB of unused code that could be eliminated or deferred. The site is also suffering from render-blocking CSS files that delay initial page display by 640ms and inefficient caching that wastes 44 KB on repeat visits. Addressing the JavaScript bloat and implementing proper code splitting would likely improve the performance score by 15-20 points and dramatically reduce the frustrating wait times users currently experience.
Other Optimization Recommendations
Eliminate Render-Blocking CSS
High Impact+15 points estimatedWhy It Matters:
Critical CSS files are blocking page rendering by 650ms, directly delaying both FCP and LCP.
How to Fix:
Inline critical CSS for above-the-fold content directly in your Next.js pages. Use next/dynamic with ssr: false for non-critical components. Configure your CSS bundle splitting to defer non-critical styles using Next.js's built-in CSS optimization.
Optimize Image Responsive Sizing
Medium Impact+8 points estimatedWhy It Matters:
Images are 36KB larger than needed for their display dimensions, wasting bandwidth and slowing LCP.
How to Fix:
Update your Next.js Image component sizes prop to match actual display dimensions (284x160 instead of 640x360). Use responsive breakpoints in your srcSet configuration. Enable Next.js automatic image optimization with proper quality settings for course thumbnails.
Keep Your Site Fast After Optimization
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Related Performance Analyses
More Next.js Speed Tests
Next.js Performance Resources
Optimize Cache Strategy
Poor caching configuration forces users to re-download resources on repeat visits, missing opportunities for faster load times.
Remove Unused JavaScript Code
356KB of unused JavaScript is bloating your bundle size and slowing down page load without providing value.
Eliminate Render-Blocking CSS Resources
CSS files are blocking initial page render and delaying FCP by 1 second, directly impacting user experience.
Optimize CSS Delivery Strategy
Render-blocking CSS delays First Contentful Paint by 900ms, preventing users from seeing content quickly.