Static site generators

Almost all modern Static Site Generators (SSGs) (like Astro, Hugo, Eleventy , or Next.js in static/hybrid mode) achieve this by pairing with a hosting platform or CMS webhooks.unfoldcms.com

Instead of the SSG itself running a persistent server to watch the CMS, the workflow relies on an event-driven trigger: When content is published in the headless CMS, it fires a webhook to your host, which automatically kicks off a fresh rebuild and deployment.unfoldcms.com

The ecosystem provides several ways to achieve automatic rebuilding:

1. The Hosting Platform Approach (Webhook-Triggered Rebuilds)

The most common setup uses a traditional SSG (Astro, Hugo, etc.) hosted on a modern frontend cloud platform. The headless CMS (Contentful, Strapi, Sanity, GraphCMS/Hygraph, etc.) triggers a webhook on publish.unfoldcms.com

• Vercel : Offers deploy hooks that accept incoming webhooks from any headless CMS to trigger automated rebuilds, plus Incremental Static Regeneration (ISR) to update specific pages without a full site rebuild.elmapicms.com
• Netlify : Uses Netlify Build Hooks to listen to CMS publish events and trigger automated site compilation.
• Cloudflare Pages : Can integrate with GitHub/GitLab triggers or use direct webhook triggers to rebuild static assets via Wrangler or Git commits.unfoldcms.com

2. Incremental Static Regeneration (ISR) / On-Demand Revalidation

If your "static" site is large, a full site rebuild on every single content tweak can take too long. Frameworks like Next.js and Nuxt support ISR or on-demand revalidation.headlesscms.guide+1

• Instead of completely rebuilding the entire site from scratch, the CMS sends a webhook to a specific API route on your server/host.
• The framework revalidates and regenerates only the specific page or tag that changed, serving instant updates to users while keeping the site statically fast.headlesscms.guide+2

3. Native CMS-to-Deployment Integrations

Some specialized platforms tightly couple content management with automated static publishing:

• CloudCannon : A Git-based CMS that natively connects to SSGs like Hugo and Jekyll, handling the automated build pipeline whenever content is saved.
• Decap CMS (formerly Netlify CMS): Directly commits changes to your Git repository, which automatically triggers your host to rebuild the static site.

If you share which headless CMS and SSG or frontend framework you are currently using, I can provide the exact webhook setup steps or recommend whether full rebuilds vs. ISR/on-demand revalidation fits your scale better.

If you use a headless CMS, Netlify is one of the strongest options for automatically rebuilding and redeploying your static website whenever content changes. You pair a static site generator with a hosting platform's build hooks and connect those hooks to your CMS's webhooks.ghost.org+4

Here are the main options worth considering.

Providers that support automatic rebuilds

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1. Netlify — best general-purpose choice

Supports static site generators such as Astro, Hugo, Eleventy and Gatsby. Create a build hook and configure your CMS to call it whenever content is published or updated.

Best for: straightforward, automated full-site rebuilds.

Netlify build hook documentation

docs.netlify.comdevelopers.netlify.com

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2. Vercel

Deploy Hooks trigger a new build when your CMS sends an HTTP request. Works well with Next.js and other supported frontend frameworks.

Best for: Next.js projects and content-driven sites.

Vercel Deploy Hooks documentation

vercel.comvercel.comwww.gatsbyjs.comwww.contentful.comhygraph.comwww.sanity.io

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3. Cloudflare Pages

Deploy Hooks let external systems trigger builds, including when headless CMS content changes.

Best for: static sites already hosted on Cloudflare.

Cloudflare Pages Deploy Hooks documentation

developers.cloudflare.com

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4. Gatsby

Gatsby supports build and preview webhooks for connecting CMS updates to builds. It is the generator/framework option rather than just a hosting provider.

Best for: teams already using Gatsby.

Gatsby webhook documentation

www.gatsbyjs.com

How the automatic rebuild works

1. Editor publishes content

Your headless CMS

2. CMS sends a webhook

Notifies the hosting platform

3. Site rebuilds and deploys

The generator fetches the latest content

This pattern works with many headless CMS platforms, including Contentful, Sanity and Hygraph.vercel.com+2

My recommendation: Start with Netlify if you want a simple, framework-agnostic solution. If your site has thousands of pages or frequent content updates, consider incremental regeneration or on-demand revalidation instead of rebuilding the entire site for every change.ghost.org+4