Fix Layout Shift Issues

How to optimize learn.wowlearnings.org

Next.js SiteScore: 9/100Analyzed May 2026Re-analyze this site

Fix Layout Shift Issues

Medium Impact+15 points estimated

Why It Matters

Large layout shifts (CLS: 0.352) create jarring user experience as content jumps during page load.

How to Fix

Add explicit width and height props to all Next.js Image components. Reserve space for dynamic content using CSS aspect-ratio or min-height. Preload custom fonts using next/font to prevent font swap layout shifts.

0Poor

What This Score Means

A score of 9 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

LCP

Largest Contentful Paint

13.9s
Poor

Good: < 2.5s

Measures how long it takes for the main content to appear on screen

INP

Interaction to Next Paint

1017ms
Poor

Good: < 200ms

Measures how quickly the page responds to user interactions

CLS

Cumulative Layout Shift

0.35
Poor

Good: < 0.1

Measures visual stability - how much content shifts during page load

AI Performance Analysis

This Next.js site has severe performance issues with a score of only 9/100, indicating critical problems that need immediate attention. The biggest issue is render-blocking CSS that's delaying page loading by 750ms, combined with massive amounts of unused JavaScript (471 KiB) and CSS (28 KiB) that are unnecessarily slowing down the site. The Largest Contentful Paint takes an extremely slow 13.9 seconds, and users may experience over 1 second of input delay due to JavaScript execution blocking the main thread for 41+ seconds. Removing unused code, optimizing the CSS delivery, and addressing the layout shifts (CLS of 0.352) should be the immediate priorities to dramatically improve both performance scores and user experience.

Other Optimization Recommendations

Eliminate Render Blocking CSS

High Impact+25 points estimated

Why It Matters:

Render blocking CSS delays LCP by 750ms and prevents critical content from appearing quickly.

How to Fix:

Use Next.js's built-in CSS optimization by moving critical styles inline or using CSS-in-JS. Split the large CSS bundle (31KB) into component-specific chunks using CSS modules. Defer non-critical CSS using Next.js dynamic imports with ssr: false for below-fold components.

Remove Unused JavaScript Code

High Impact+20 points estimated

Why It Matters:

471KB of unused JavaScript increases bundle size and blocks the main thread for 2.6 seconds.

How to Fix:

Use Next.js Bundle Analyzer to identify large unused chunks. Implement dynamic imports for non-critical components and libraries. Configure webpack tree shaking in next.config.js and remove legacy polyfills since modern browsers support these features natively.

Keep Your Site Fast After Optimization

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