TanStack Markdown: Tiny, Fast Markdown Parser and Renderer with Zero Dependencies

TanStack Markdown is a small, synchronous Markdown parser and renderer built for technical blogs and documentation. Each layer is independently importable: a parser that produces a deterministic, serializable AST, an HTML renderer with safe defaults, and React and Octane renderers that share the same core output semantics. An optional profile for accumulated AI response streams is also included.

The package has no runtime dependencies. React and Octane are optional peer dependencies used only by their matching adapter entry points, and syntax highlighting is kept outside the Markdown bundle to avoid bloat. The result is a lightweight pipeline suited for projects that need fast, predictable Markdown handling without pulling in a full-featured content framework.