A slow website kills conversions. Here's everything you need to know to achieve a 90+ Lighthouse score and sub-2-second load times.
Why Speed Matters
A 1-second delay in page load time can reduce conversions by 7%. Google also uses Core Web Vitals as a ranking signal, making speed optimization essential for both UX and SEO.
Optimize Images
Images are often the largest assets on a page. Use modern formats like WebP, implement lazy loading, and always specify width and height attributes to prevent layout shift.
Minimize JavaScript
Audit your JS bundle, remove unused code, defer non-critical scripts, and consider code splitting to reduce initial load time.
Leverage Browser Caching
Set appropriate cache headers for static assets. This ensures returning visitors load your site significantly faster.
Use a CDN
A Content Delivery Network (CDN) serves your assets from servers geographically closer to your users, dramatically reducing latency.