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Site framework

Gatsby

Open source, maintained under Netlify · Site framework. How DNSTrace.dev identifies it from public evidence.

Updated Sep 2026

What Gatsby is

Gatsby is a React framework that builds pages ahead of time and hydrates them in the browser. Because every Gatsby build mounts the application into a fixed root element, the container identifier is a dependable public signal.

How DNSTrace.dev detects it

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

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.

Compare with

Site frameworkAstro

Open source, the Astro Technology Company

Application frameworkNext.js

Open source, maintained by Vercel

Frontend libraryReact

Open source, maintained by Meta

Frontend application platformNetlify

Netlify, Inc.

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