Fix Image Sizing and Optimization

How to optimize learn.wowlearnings.org

Next.js SiteScore: 69/100Analyzed May 2026Re-analyze this site

Fix Image Sizing and Optimization

Medium Impact+8 points estimated

Why It Matters

Images are served at 640x360 but displayed at 284x160, wasting 36KB of bandwidth.

How to Fix

Configure Next.js Image component with proper responsive breakpoints using the 'sizes' prop. Use multiple image sizes in your CDN (happythoughts.in) to serve appropriately sized images. Enable automatic format optimization to WebP/AVIF in Next.js config.

0Needs Improvement

What This Score Means

A score of 69 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

LCP

Largest Contentful Paint

5.5s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

142ms
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 learning platform has poor performance with a score of 69/100. The biggest problem is render-blocking CSS files that are delaying page loading by 670ms, significantly impacting the Largest Contentful Paint (5.5 seconds) and overall user experience. The site also suffers from oversized images that are being served at 640x360 but displayed at much smaller dimensions, wasting 36KB of bandwidth. Additionally, there's 285KB of unused JavaScript code that could be removed or deferred, and 29KB of unused CSS that should be eliminated to improve loading times.

Other Optimization Recommendations

Remove Render-Blocking CSS Resources

High Impact+18 points estimated

Why It Matters:

CSS files are blocking initial render and delaying LCP by 650ms.

How to Fix:

Use Next.js dynamic imports to split CSS into critical and non-critical parts. Inline critical CSS for above-the-fold content using webpack plugins. Remove unused CSS rules (93% of your main CSS file is unused) with PurgeCSS or UnCSS.

Optimize JavaScript Bundle Size

High Impact+16 points estimated

Why It Matters:

285KB of unused JavaScript is blocking page load and causing 910ms delay in LCP.

How to Fix:

Implement code splitting in Next.js using dynamic imports for non-critical components. Remove unused polyfills for modern JavaScript features (Array.from, Object.hasOwn) in your Next.js build config. Use webpack-bundle-analyzer to identify and remove unnecessary dependencies.

Keep Your Site Fast After Optimization

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