Optimize Image Delivery Strategy

How to optimize staging.learn.wowlearnings.org

Next.js SiteScore: 61/100Analyzed May 2026Re-analyze this site

Optimize Image Delivery Strategy

Medium Impact+8 points estimated

Why It Matters

Images are oversized for their display dimensions, wasting 31 KiB of unnecessary bandwidth.

How to Fix

Configure Next.js Image component with proper responsive breakpoints using 'sizes' prop. Generate multiple image sizes (240w, 480w, 640w) for different viewport widths. Set quality to 85 instead of 75 for better compression ratio. Implement proper aspect ratio containers to prevent layout shifts.

0Needs Improvement

What This Score Means

A score of 61 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

6.8s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

147ms
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 site has poor performance with a score of 61/100, indicating significant user experience issues. The biggest problem is excessive unused JavaScript (282 KiB that could be removed), which is severely impacting page load times - your Largest Contentful Paint takes 6.8 seconds and Time to Interactive is a problematic 10.3 seconds. The site is loading unnecessary code from Google Analytics and several Next.js chunks that are mostly unused, plus there are render-blocking CSS files delaying initial page display. Removing unused JavaScript, optimizing CSS delivery, and code-splitting could potentially improve load times by over 1 second and dramatically boost your performance score.

Other Optimization Recommendations

Remove Unused JavaScript Code

High Impact+25 points estimated

Why It Matters:

282 KiB of unused JavaScript is delaying LCP by 1.05 seconds and blocking critical page rendering.

How to Fix:

Use Next.js bundle analyzer to identify unused code in your chunks. Implement code splitting with dynamic imports for non-critical components. Remove or defer Google Analytics script until after page load. Configure webpack-bundle-analyzer to eliminate dead code in production builds.

Eliminate Render Blocking CSS

High Impact+20 points estimated

Why It Matters:

CSS files are blocking initial page render and delaying both FCP and LCP by 800ms.

How to Fix:

Extract critical CSS for above-the-fold content and inline it in the HTML head. Use Next.js _document.js to inline critical styles. Convert non-critical CSS to load asynchronously using media='print' technique or loadCSS library. Remove 93% unused CSS from your main stylesheet.

Keep Your Site Fast After Optimization

Once your site is optimized, maintain that speed. Use DeployHQ for zero-downtime, automated deployments—so performance fixes and updates go live safely every time, without breaking your site.

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