TanStack Markdown

A tiny, fast, deterministic Markdown parser and renderer for blogs and documentation.

• 4.6 KB gzip parser
• 6.4 KB gzip HTML renderer
• 6.3 KB gzip React adapter
• zero runtime dependencies
• serializable AST
• safe defaults for raw HTML and executable URLs
• optional docs extensions and external syntax highlighting

pnpm add @tanstack/markdown

import { renderHtml } from '@tanstack/markdown/html'

const html = renderHtml('# Fast by default')

import { Markdown } from '@tanstack/markdown/react'

export function Article({ source }: { source: string }) {
  return <Markdown>{source}</Markdown>
}

TanStack Markdown targets controlled technical content. It supports the Markdown used by blogs and docs, then spends its remaining complexity budget on deterministic output, HTML/React parity, malformed-input resilience, and small entry points. It is intentionally not a complete CommonMark, GFM, MDX, or general content-processing implementation.

Documentation

• Overview
• Installation
• Quick Start
• Comparison
• Syntax Profile
• React Guide
• Syntax Highlighting
• Extensions
• API Reference
• Architecture

Verification

pnpm run verify

To include downstream content in the corpus gate:

MARKDOWN_CORPUS_DIRS=../tanstack.com/src/blog:../tanstack.com/docs \
  pnpm run test:corpus

Generated reports:

• Bundle sizes
• Benchmarks
• CommonMark compatibility accounting