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Comark

Comark is an open-source Markdown parser and renderer with components, attributes and plugins. It streams AI output to React, Vue, Svelte, Angular, HTML and the terminal.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-24T22:04:27.070Z. Cached copy · Source on comark.dev

# Comark

> Comark is an open-source Markdown parser and renderer with components, attributes and plugins. It streams AI output to React, Vue, Svelte, Angular, HTML and the terminal.

## When to use Comark

Use Comark when:

- The same Markdown renders in more than one place: React, Vue, Svelte, Angular, HTML strings, or the terminal (ANSI).
- You render streaming LLM output. Comark closes unterminated syntax (bold, code fences, components) on every frame, in every renderer.
- Content needs components without a build step or code execution, for example `::alert{type="info"}` written by an author, a CMS, a database, or a model.
- You build an intelligent UI (generative UI): the model answers with your own interactive components, which render progressively while it streams.
- You want to parse once and keep the result: `parseMarkdown()` returns a serializable `MarkdownDocument` you can cache, store, and render later on any client.

Use something else when:

- You only convert Markdown to HTML, with no components and no streaming: marked or markdown-it are smaller.
- Your content imports and runs JavaScript (JSX expressions, ESM imports): use MDX.
- You depend on remark or rehype plugins: Comark runs markdown-it plugins, not unified plugins.
- You build a React-only chat UI and need no component syntax in the output: Streamdown also fits.

- [Choosing a Markdown library for AI chat](https://comark.dev/raw/compare/markdown-libraries-for-ai-chat.md)
- [Render streaming Markdown from an LLM](https://comark.dev/raw/use-cases/ai-chat-streaming.md)
- [Let an LLM render UI components inside Markdown](https://comark.dev/raw/use-cases/generative-ui.md)
- [Build your own intelligent UI](https://comark.dev/raw/use-cases/intelligent-ui.md)
- [Comark vs MDX](https://comark.dev/raw/compare/comark-vs-mdx.md)
- [Comark vs react-markdown](https://comark.dev/raw/compare/comark-vs-react-markdown.md)
- [Comark vs Streamdown](https://comark.dev/raw/compare/comark-vs-streamdown.md)
- [Comark vs Markdoc](https://comark.dev/raw/compare/comark-vs-markdoc.md)

## Documentation

Every page below is available as raw markdown. Fetch any URL directly.

- [Landing page](https://comark.dev/raw/index.md): Overview of Comark
- [Ecosystem](https://comark.dev/raw/ecosystem.md): Renderers, plugins, integrations and tooling built around Comark by the community and the core team.

## Documentation Sets

- [Comark Documentation](https://comark.dev/llms-full.txt): Complete Comark documentation as plain markdown — getting started, syntax, rendering, plugins, API reference, comparisons, and examples.
- [Comark core](https://comark.dev/llms-core.txt): Parse Markdown into a serializable document, the Comark syntax, and the core APIs.
- [Streaming Markdown with Comark](https://comark.dev/llms-streaming.txt): Render streaming LLM output: auto-close, AI chat in every framework, and components in model output.
- [Comark for Vue and Nuxt](https://comark.dev/llms-vue.txt): Render Markdown in Vue 3 a
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