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The ROI of Page Speed: Why Faster Websites Convert Better

Sep 01, 2025

The ROI of Page Speed: Why Faster Websites Convert Better

When a website feels slow, trust drops. And when trust drops, conversions follow.
In projects like Aqui Media and Anne Mondy’s headless store, speed was the difference between a visitor browsing and a visitor buying.

Why speed matters

  • 1s slower = up to 20% drop in conversion
  • Mobile bounce rates increase dramatically past 3s
  • Investors, partners, and buyers see speed as credibility

The Playbook

  1. Measure first

    • Use Lighthouse or Umami with Core Web Vitals tracking
    • Focus on LCP (Largest Contentful Paint) and TTI (Time to Interactive)

  2. Quick wins

    • Optimize images (WebP/AVIF, responsive sizes)
    • Cache at route or CDN level
    • Preload fonts, avoid layout shift

  3. Advanced wins

    • Route-level streaming in Next.js
    • Remove unused scripts/libraries
    • Monitor in production with RUM (real user monitoring)

Results we’ve seen

  • Aqui Media: faster article load → +18% more sessions per visitor
  • Anne Mondy: optimized storefront → smoother checkout on mobile

Lessons Learned

  • Speed = trust. Users don’t explain it, but they feel it.
  • Small technical wins compound into business ROI.
  • Make it measurable — it’s not a “nice to have,” it’s a lever for growth.
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