Gatsby: Site framework | DNSTrace.dev

Learn how Gatsby combines React, content sources and a build pipeline, and what that means for CMS publishing, generated pages and deployment.

Updated 8 September 2026

What Gatsby is used for

Gatsby is a React-based website framework with a content and build ecosystem. Its documentation covers components, GraphQL data concepts, image optimization and connections to content management systems. It also describes multiple rendering options.

A publication can combine editorial content with reusable React page templates. The content source and the public website can remain separate systems, connected by a build and publication process.

Content sources and generated pages

Gatsby’s ecosystem includes source integrations, plugins and a build process that turns content into website output. Those connections make the shape and availability of the source data relevant to the build.

For example, a missing image or a renamed CMS field can affect more than one page template. Test changes to the content schema against representative entries, including older content that may be incomplete.

Planning updates and maintenance

Document what happens after an editor publishes: whether a build runs, how it reports failures and when the new output becomes available. A saved CMS entry is not necessarily a completed website deployment.

Review plugin maintenance and rendering requirements when planning upgrades. The framework, source integration and hosting service each have their own responsibilities; troubleshooting is easier when those boundaries are recorded.

How DNSTrace.dev detects Gatsby

Detection reads the final HTTPS response and the first bytes of its markup. One matching signal is reported as strong evidence; two or more independent signals are reported as confirmed.

id="___gatsby" in markup — The root container element every Gatsby build mounts into.
meta generator naming Gatsby — Present in default builds.

What a detection proves

The page was built by Gatsby.

What it does not prove

The Gatsby version, the data sources behind the build, or the hosting platform. Gatsby output is static, so it can be served from anywhere.

Common questions about Gatsby

Does Gatsby include the CMS where editors write content?

Gatsby can integrate with a CMS or other content source, but the website framework and editorial system are separate choices. The project defines how content reaches the published pages.

Does Gatsby imply React?

Gatsby builds React applications, but DNSTrace.dev reports React separately only when React's own markup markers survive in the output.

Site framework