Optimize JavaScript Build Configuration

How to optimize hexbytes.in

Next.js SiteScore: 37/100Analyzed April 2026Re-analyze this site

Optimize JavaScript Build Configuration

Medium Impact+12 points estimated

Why It Matters

Legacy JavaScript polyfills and forced reflows block the main thread for 435ms, degrading user interaction responsiveness.

How to Fix

Update Next.js target to 'es2020' in next.config.js to remove unnecessary polyfills for modern browsers. Optimize React components causing forced reflows by batching DOM reads/writes and using CSS transforms instead of layout-triggering properties. Consider removing Facebook Pixel or loading it asynchronously.

0Poor

What This Score Means

A score of 37 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

9.5s
Poor

Good: < 2.5s

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

INP

Interaction to Next Paint

386ms
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/React site has poor performance with a score of 37/100, indicating significant user experience issues. The biggest problem is massive image optimization failures - three testimonial images are consuming over 4MB while displaying at tiny 140x80 pixel sizes, creating enormous waste and severely impacting load times. Your Largest Contentful Paint takes a painful 9.5 seconds, and users can't interact with the page for over 14 seconds due to excessive JavaScript blocking the main thread. Converting images to modern formats (WebP/AVIF), properly sizing them for display dimensions, and reducing unused JavaScript could easily improve your score by 30+ points and dramatically speed up the site.

Other Optimization Recommendations

Fix Redirect and Optimize Images

High Impact+25 points estimated

Why It Matters:

The redirect from hexbytes.in to www.hexbytes.in delays LCP by 800ms, while oversized testimonial images waste 4MB of bandwidth.

How to Fix:

Update all internal links to use https://www.hexbytes.in directly to eliminate the redirect. Convert testimonial images to WebP format and resize from 800x800 to 140x140 using Next.js Image component with proper width/height props. Add fetchpriority='high' to the LCP image.

Reduce Unused CSS and JavaScript

High Impact+18 points estimated

Why It Matters:

94% of your CSS (107KB) and 198KB of JavaScript are unused, causing 1.2 second delay in FCP and LCP.

How to Fix:

Use Next.js dynamic imports to code-split unused page components like about-43053e657f5c6c8c.js. Remove unused Tailwind CSS classes with PurgeCSS configuration in next.config.js. Defer third-party scripts like Google Analytics and Facebook Pixel until after page load.

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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