WHAT IS IT?
Docusaurus is a static site generator built for technical documentation, maintained by Meta. You write content in Markdown or MDX, customise a React theme, and ship a fast, indexable site as a plain static folder. Widely used by open source projects for their docs portals.
WHY IS IT INTERESTING?
- Native MDX: Markdown is extended with inline React components. Great for callouts, tabbed code blocks, or interactive demos sitting right next to the prose.
- Built-in versioning: Docusaurus handles multiple doc versions side by side (v2.0, v3.0, etc.) with zero third-party setup. Critical for libraries supporting several active branches.
- i18n out of the box: Translations handled locally or through Crowdin, with per-language routes. No convoluted plugin needed.
- Search and blog included: Algolia DocSearch wires up in a few lines, and the integrated blog covers release notes or changelogs without piling on another tool.
- Pluggable architecture: Plugins, presets, swizzlable themes. You can customise a component without forking, and the community maintains plugins for OpenAPI, redirects, sitemaps and more.
USE CASES
- Documentation portal for an open source library or public API
- Internal company docs with versioning per release
- Multilingual technical knowledge base
- Engineering blog + docs under the same roof, with unified search
- Product docs with interactive React/MDX demos