LCP
Largest Contentful Paint
6.3s
Poor
Good: < 2.5s
Measures how long it takes for the main content to appear on screen
Optimize JavaScript Execution Time
How to optimize staging.learn.wowlearnings.org
Optimize JavaScript Execution Time
High Impact+15 points estimated
Why It Matters
2.2 seconds of JavaScript execution time is creating 580ms of Total Blocking Time, hurting user interactivity.
How to Fix
Break up long tasks by using React.Suspense and React.lazy for component lazy loading. Move heavy computations to Web Workers or defer them using setTimeout. Configure Next.js with webpack optimizations to reduce bundle parse time and enable modern JavaScript output for supported browsers.
0Needs Improvement
What This Score Means
A score of 54 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
424ms
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 site has poor performance with a score of 54/100, indicating significant user experience issues. The biggest problem is an extremely slow Largest Contentful Paint of 6.3 seconds, caused primarily by render-blocking CSS files that could save 1.1 seconds if optimized. The site is also weighed down by 285KB of unused JavaScript (including Google Analytics code) and excessive main-thread work taking 4 seconds, which prevents users from interacting with the page quickly. Immediate wins include removing unused code, deferring non-critical CSS, and optimizing the JavaScript bundle size to potentially improve the performance score by 30+ points.
Other Optimization Recommendations
Eliminate Render-Blocking CSS Resources
High Impact+25 points estimatedWhy It Matters:
Render-blocking CSS is delaying LCP by 1.1 seconds, preventing users from seeing meaningful content.
How to Fix:
Move critical CSS inline in your Next.js pages using styled-jsx or CSS-in-JS libraries. Use next/dynamic with ssr: false for non-critical components. Configure Next.js to split CSS chunks more efficiently by optimizing your CSS imports and removing unused styles from the main CSS bundle.
Reduce Unused JavaScript Payload
High Impact+20 points estimatedWhy It Matters:
285KB of unused JavaScript is blocking the main thread and delaying LCP by 1.05 seconds.
How to Fix:
Implement code splitting using Next.js dynamic imports for heavy components. Remove or defer Google Analytics until after page load using next/script with strategy='lazyOnload'. Use Next.js bundle analyzer to identify and tree-shake unused dependencies from your JavaScript chunks.
Keep Your Site Fast After Optimization
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Related Performance Analyses
More Next.js Speed Tests
Next.js Performance Resources
Reduce Unused JavaScript Payload
285KB of unused JavaScript is blocking the main thread and delaying LCP by 1.05 seconds.
Remove Legacy JavaScript Polyfills
Unnecessary polyfills add 40KB of code that modern browsers don't need, slowing down execution.
Optimize JavaScript Bundle Splitting
2.9 seconds of JavaScript execution time blocks the main thread and delays Time to Interactive by 11.2 seconds.
Eliminate Render-Blocking CSS Resources
Render-blocking CSS is delaying LCP by 1.1 seconds, preventing users from seeing meaningful content.