Where your images are hosted and how they are delivered significantly affects page load time. A Content Delivery Network (CDN) serves images from servers close to each visitor, dramatically reducing load time for international audiences.
A CDN is a network of servers distributed geographically. When a visitor requests your page, images are served from the CDN node closest to them — rather than from your origin server which may be thousands of miles away.
| Visitor Location | Without CDN (UK server) | With CDN |
|---|---|---|
| UK | 50ms image load time | 40ms |
| USA | 180ms image load time | 55ms |
| Australia | 280ms image load time | 65ms |
| India | 240ms image load time | 50ms |
| CDN | Free Tier | Best For |
|---|---|---|
| Cloudflare | Unlimited bandwidth | Any website — most popular |
| Netlify CDN | 100GB/month | Sites hosted on Netlify (like yours) |
| BunnyCDN | Pay per use (very cheap) | High-traffic sites |
If your site is hosted on Netlify (as this tool is), your images are automatically served via Netlify's global CDN. No additional configuration is required. Your images are already being delivered from the nearest server to each visitor.
Caching tells browsers to store images locally so they don't need to re-download them on subsequent visits. Netlify handles this automatically with sensible defaults. For sites on other hosts, set Cache-Control headers to at least 1 year for static images.
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