How to Use a Content Delivery Network (CDN) for Faster Content Delivery on Webflow?

A CDN is a network of servers distributed globally that cache and serve your site's content from locations close to your visitors. Instead of every request traveling to your origin server, CDN edge nodes serve cached copies from nearby locations. For a visitor in Germany accessing a site hosted in the US, a CDN cuts latency from 100–200ms to 10–30ms.

If your site is hosted on Webflow, you already have CDN delivery. Webflow uses Fastly, one of the more performant CDN providers, included with all Webflow hosting plans. Your static assets — images, CSS, fonts, JavaScript — are cached on Fastly's edge nodes worldwide and served from there automatically.

This matters more than it might seem: CDN delivery is part of the reason a Webflow site built by someone with no performance expertise often outperforms a custom WordPress site on a basic server. The infrastructure is already there. You didn't have to set it up.

When you'd need to think about CDN further: if you're serving large media files outside of Webflow's asset system, those files aren't on Webflow's CDN. Video files should be hosted on a video platform (YouTube, Vimeo, or Cloudflare Stream) rather than uploaded directly to Webflow. Large video files in Webflow's asset manager work, but they won't be cached the same way as images and scripts.

For sites that pull data from external APIs or custom backends: those API responses aren't cached by Webflow's CDN. The latency of API calls is determined by your API server's location and response speed, not Webflow's CDN. If API calls are slowing your page, that's a separate problem to solve at the API layer.

Custom domain and Cloudflare: if you're using a custom domain on Webflow and have Cloudflare in front of it as a proxy, you have two CDN layers. This usually works fine, but Cloudflare may cache old content after you publish to Webflow. Either purge the Cloudflare cache after publishing, or set Webflow assets to bypass Cloudflare's cache. Using both without understanding the interaction causes confusing stale content issues.

Monthly check: run PageSpeed Insights. The "Serve static assets with an efficient cache policy" audit tells you whether assets are being served with appropriate cache lifetimes. For Webflow-hosted sites, this should pass by default for Webflow's own assets.

For most Webflow sites, CDN performance is not something you configure — it's something you already have. The work is understanding when you're accidentally working around it with third-party scripts, self-hosted video, or proxy configurations that complicate caching.