Implement Responsive Image Optimization

How to optimize dev.happythoughts.in

Next.js SiteScore: 75/100Analyzed March 2026Re-analyze this site

Implement Responsive Image Optimization

High Impact+10 points estimated

Why It Matters

Oversized images waste 126 KiB of bandwidth and slow down perceived performance on mobile devices.

How to Fix

Replace img tags with Next.js Image component which automatically generates responsive sizes. Configure next.config.js to optimize images from staging-cdn.happythoughts.in domain. Set appropriate sizes prop based on your 378px container width for mobile.

0Needs Improvement

What This Score Means

A score of 75 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

6.1s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

81ms
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 concerning performance issues with a score of 75/100, particularly affecting user experience metrics. The biggest problem is excessive unused JavaScript code, which is wasting 73 KB and delaying page interactivity by 450ms, while also contributing to a slow Largest Contentful Paint of 6.1 seconds. The site is also serving oversized images that are much larger than their display dimensions, wasting an additional 126 KB of bandwidth. Removing unused JavaScript through better code splitting, implementing responsive images, and addressing the render-blocking CSS could improve the performance score by 15-20 points and significantly speed up page loading.

Other Optimization Recommendations

Remove Unused JavaScript Code

High Impact+12 points estimated

Why It Matters:

73 KiB of unused JavaScript is delaying LCP by 450ms and blocking page interactivity.

How to Fix:

Configure Next.js bundle analyzer to identify unused chunks. Use dynamic imports for heavy components that aren't immediately needed. Enable tree shaking in your webpack config and review the 9da6db1e and 9204 chunks for dead code elimination.

Eliminate Render-Blocking CSS

Medium Impact+8 points estimated

Why It Matters:

Critical CSS file blocks first paint by 160ms, directly impacting both LCP and FCP metrics.

How to Fix:

Extract critical CSS using Next.js built-in CSS optimization or tools like critical package. Inline critical styles in the document head and defer non-critical CSS. Consider splitting your CSS bundle to load only necessary styles for above-the-fold content first.

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.

Explore DeployHQ →Trusted by engineering teams shipping high-performance sites

Want to Analyze YOUR Website?

Get AI-powered performance insights with actionable fixes in 30 seconds

More Next.js Speed Tests

Next.js Performance Resources

Frequently Asked Questions