Fumadocs
Fumadocs is a free, open-source React.js framework for building customizable documentation sites.
What Fumadocs is
Fumadocs is a free, open-source React.js framework for building customizable documentation sites. It supports Markdown and MDX, and can connect to content from a CMS or other sources. Official installation templates cover Next.js, Astro with React, Waku, React Router, and Tanstack Start. Writers can use syntax highlighting, code groups, callouts, cards, custom heading anchors, and an automatic table of contents. Developers can adapt the default theme or use headless mode to supply their own UI. Search options include the default ZBSearch engine and integrations such as Algolia, FlexSearch, Meilisearch, Mixedbread, Orama Cloud, and Typesense. Its OpenAPI integration presents endpoint details, interactive playgrounds, request examples, response samples, and TypeScript definitions. Fumadocs can serve processed Markdown pages and generated llms.txt files for LLMs and AI agents. Deployment goes through the underlying React framework, with static builds documented for CDN hosting. The maker says it does not work on the Edge runtime. Private documentation and documentation versioning are supported; questions can be raised through GitHub Discussions.
Good
- Free and open source.
- Supports Markdown, MDX, and CMS content sources.
- Includes writing tools such as callouts and code groups.
- Offers several search integrations.
- Supports private documentation and versioning.
Watch out
- Does not work on the Edge runtime.
- Apps deploy through an underlying React framework.
Who it suits
Fumadocs suits developers building documentation sites, including teams creating interactive component playgrounds. It may fit projects that need Markdown or MDX content, configurable search, or OpenAPI reference pages.
Verdict
Fumadocs provides a broad set of documentation authoring, search, and API-reference capabilities for React-based projects. Check its Edge runtime limitation and deployment model against your setup.
Plans and prices
From Fumadocs's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Fumadocs | Free | Open-source documentation framework · no paid plan listed |
The facts
Each one read from Fumadocs's own pages, with the date it was checked.
What it does
- AI support
- Fumadocs can serve processed Markdown pages and generated llms.txt files for LLMs and AI agents.checked 4 Oct 2026
- API documentation
- The official OpenAPI integration supports endpoint details, an interactive playground, request examples, response samples, and TypeScript definitions.checked 4 Oct 2026
- Audience
- The maker presents Fumadocs as a framework for developers and highlights interactive component playgrounds for UI component libraries.checked 4 Oct 2026
- CMS integrations
- The content source guide provides examples for BaseHub and Sanity and links to community Payload CMS integrations.checked 4 Oct 2026
- Content
- Fumadocs natively supports Markdown and MDX, and can integrate with any content source, including a CMS.checked 4 Oct 2026
- Customization
- Its default theme can be customized, and its headless mode lets developers plug in their own UI.checked 4 Oct 2026
- Deployment
- Fumadocs apps are deployed through their underlying React framework, and the maker also documents static builds for CDN hosting.checked 4 Oct 2026
- Deployment limitation
- The maker states that Fumadocs does not work on the Edge runtime.checked 4 Oct 2026
- Frameworks
- Official installation templates include Next.js, Astro with React, Waku, React Router, and Tanstack Start.checked 4 Oct 2026
- Open source
- The maker describes Fumadocs as open source and community powered.checked 4 Oct 2026
- Product
- Fumadocs is a React.js documentation framework for building customizable documentation sites.checked 4 Oct 2026
- Search integrations
- Search can use the default ZBSearch engine or integrations including Algolia, FlexSearch, Meilisearch, Mixedbread, Orama Cloud, and Typesense.checked 4 Oct 2026
- Support
- The quick start directs users with questions or confusing documentation to GitHub Discussions for feedback.checked 4 Oct 2026
- Writing features
- Document authoring features include syntax highlighting, code groups, callouts, cards, custom heading anchors, and an automatic table of contents.checked 4 Oct 2026
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