Performance
January 22, 2025
8 min read
NullGlitch Team

Achieving Perfect Lighthouse Scores in 2025

A comprehensive guide to achieving 95+ Lighthouse scores across all metrics. Learn modern optimisation techniques for NZ businesses.

Performance
Lighthouse
Web Vitals
Achieving Perfect Lighthouse Scores in 2025

In 2025, a slow website is more than just an annoyance—it's a business risk. Google's Core Web Vitals are now a major ranking factor. To compete in the NZ market, your site needs to be fast, accessible, and follow web best practices.

Our 5-Step Performance Playbook

  1. Optimise images for the modern web
  2. Reduce JavaScript execution time
  3. Leverage server-side rendering (SSR)
  4. Prioritise critical CSS
  5. Monitor and measure constantly
Example: Next.js Image Optimisation
// Always use the Next.js specialized Image component
import Image from "next/image"

<Image 
  src="/hero.jpg" 
  alt="Hero" 
  width={1200} 
  height={600} 
  priority 
  className="object-cover"
/>

Why Lighthouse Scores Matter

Lighthouse measures four key areas: Performance, Accessibility, Best Practices, and SEO. A high score in all areas signals to Google that your site provides a high-quality user experience, leading to better rankings and lower bounce rates.