Page Speed & Conversions: How Every Second Costs You Money

A 1-second delay in page load time reduces conversions by 7%. Here's the data — and how to fix it.

The Data

⚡ 1 second load: 40% conversion rate

⏳ 3 second load: 22% conversion rate (-45%)

🐌 5 second load: 12% conversion rate (-70%)

💀 10+ seconds: 90% bounce rate

LCP (Largest Contentful Paint): Under 2.5 seconds — how fast the main content loads

INP (Interaction to Next Paint): Under 200ms — how fast the page responds to clicks

CLS (Cumulative Layout Shift): Under 0.1 — how much the page visually jumps around

Compress images (WebP format), lazy load below-fold images, and use responsive srcset. This alone can cut load time 40-60%.

Every KB of JS takes 2-4x longer to process than the same KB of image. Defer non-critical scripts. Remove unused libraries.

Serve content from servers closest to your users. CDNs reduce latency 50-70% for geographically distributed audiences.

Browser caching stores static assets locally. Returning visitors load in <1 second instead of 3-5 seconds.

Combine CSS files, use CSS sprites for icons, inline critical CSS. Fewer requests = faster page loads.

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