Docusaurus is a static site generator built for documentation. Its homepage frames the goal as letting teams “build optimized websites quickly, focus on your content,” and the project is, in its own words, “built using React,” so that developers can “extend and customize your project’s layout by writing React components.” It takes documentation written in Markdown and MDX and produces a complete static website, ready to be served as plain HTML.
Facebook (now Meta) created Docusaurus and open-sourced it in 2017. Joel Marcey announced it in the official “Introducing Docusaurus” post on December 14, 2017, describing it as “a tool designed to make it easy for teams to publish documentation websites without having to worry about the infrastructure and design details.” The motivation was a problem Facebook faced repeatedly: each of its many open-source projects was building and maintaining its own documentation website from scratch. Docusaurus consolidated that work into one tool, so a project could get a polished docs site, with blog support, search, internationalization, and versioning, almost for free.
The use of MDX is central to what distinguishes Docusaurus from earlier documentation generators. MDX is Markdown extended so that React components can be embedded directly in the prose. As the site explains, “Simply write docs and blog posts with MDX, and Docusaurus builds them into static HTML files ready to be served. You can even embed React components in your Markdown thanks to MDX.” This lets documentation authors mix ordinary Markdown with interactive elements, tabs, live code examples, callouts, without leaving the content file.
Docusaurus directly serves the docs-as-code workflow: documentation lives in a Git repository alongside the software it describes, is reviewed through pull requests, and is built and deployed automatically. Built-in versioning lets a project keep documentation for multiple released versions side by side, and the translation system supports maintaining docs in many languages. Because the output is static files, the resulting sites are fast and inexpensive to host, commonly on services such as GitHub Pages.
The tool was adopted quickly inside Facebook and across the wider frontend ecosystem, used by projects including Prettier, Babel, React Native, and many others. A major second generation, Docusaurus 2, rebuilt the foundation on a modern React and MDX stack and was announced as stable in 2022. Docusaurus established React-based, MDX-powered documentation sites as a standard approach, extending the static-site-generator lineage from Jekyll and Hugo into the specific domain of developer documentation.