Markdown Building Blocks

Markdown Libraries & Tools

mdshare (web: mdshare.live, github: urbanmorph/mdshare, npm: mdshare-mcp) Free markdown sharing and collaboration. Upload a markdown, get shareable links with view/edit/comment permissions. WYSIWYG editor, inline comments, no login required. API + MCP server for AI integration.

md-viewer-py (GitHub: bot-anica/md-viewer-py, PyPI: md-viewer-py) Drop-in Markdown viewer for any folder. It works locally. Its main features: dashboard, live reload, dark/light themes, in-browser editing, 3 types of search as in Webstorm: search in current file, search in all files, search files by names.

BeLikeNative Markdown Preview (web: theluckystrike.github.io/bln-markdown-preview, github: theluckystrike/bln-markdown-preview) Free online Markdown editor with live preview, syntax highlighting, and writing quality checks. Client-side only, no server needed. Features include dark/light themes, export to HTML, and L1-aware grammar suggestions powered by BeLikeNative.

LiteMarkup (GitHub: tuures/LiteMarkup, NPM: litemarkup, Web: Live demo) Parser with a typed, AST-first TypeScript API. Under 3 KB gzipped, zero dependencies. LiteMarkup supports the most popular Markdown features while maintaining a small bundle size, good performance, and strong AST extensibility. A simple HTML string renderer is included for demonstration and simple use cases, but users are expected to bring their own renderer tailored to their specific use case and context, such as rendering to React, docx, or something else. LiteMarkup performance is roughly on par with popular JS-based implementations like commonmark, marked, and markdown-it, but naturally slower than WASM-based ones.

Dualmark (web: dualmark.dev, github: dodopayments/dualmark, npm: @dualmark/core) Markdown-first web infrastructure. Auto-generates a markdown twin of every page (e.g. /pricing + /pricing.md) and serves it via HTTP content negotiation when AI crawlers visit — same URL, two formats. TypeScript, Apache 2.0, adapters for Astro, Next.js, and Cloudflare Workers.

Redline (web: redline.levistudio.net, github: alevi/redline, npm: @levistudio/redline) — by Alon Levi at Levi Studio. Local inline-comment review tool for markdown files, designed for human-in-the-loop AI doc review. Open a .md, highlight any sentence, leave an inline comment; a Claude agent replies in the comment thread within seconds, suggests edits, and rewrites the document when you accept the round. The next round opens with the rewrite shown inline as a diff. Local-first: the server binds to 127.0.0.1, the agent inherits your Claude Code session (no ANTHROPIC_API_KEY), and history snapshots land alongside the file so a bad round can be rolled back from disk. One-command install: bunx @levistudio/redline ./your-file.md. MIT-licensed.

@webc.site/math (web: math.webc.site, github: webc-site/math, npm: @webc.site/math) The world's smallest and fastest TeX-to-MathML compiler for Markdown math formulas (LaTeX/TeX) rendering. Under 4 KB gzipped, zero dependencies, and 3.6x faster than KaTeX. Compiles formulas directly into browser-native MathML Core elements, completely eliminating client-side layout rendering dependencies and heavy font/CSS bundles. Comes with official plugins for markdown-it, marked, and remark.

Babelmark

Markdown Style Guides / Best Practices

Markdown Lint / Style Rule Checker

slopless (github: seochecks-ai/slopless, npm: slopless) Deterministic textlint preset and CLI to flag AI-generated and padded English prose without calling an LLM. It catches the common "LLM tells" — hollow framing, fake "not X but Y" contrasts, hedging, em-dash overuse, vacuous closers — and emits reproducible JSON findings, so it runs in CI. Use it via npx slopless or as a textlint preset ("preset-slopless": true). MIT-licensed.

Markdown Web Components / Custom Elements

Markdown to Website / Blog

Markdown to Email

Markdown to Presentation / Slideshow

Markdown to Portable Document Format (PDF)

MDMagic (web: https://mdmagic.ai, github: https://github.com/MDMagic-MCP/mdmagic-mcp-server) - convert Markdown to Word, PDF, and HTML using your own Word templates - letterhead, fonts, branding applied automatically. Web app + MCP server for Claude, Cursor, OpenClaw, and any MCP-compatible AI assistant. Freemium.

Markdown Styles / Documents / Pages

Markdown to Books

Markdown to Table of Contents (TOC)

Markdown to Markdown Pre-Processor

NRG (web: central.sonatype.com/.../readme-generator, github: nanolaba/readme-generator) Nanolaba Readme Generator — builds multi-language README files (e.g. README.md and README.ru.md) from a single .src.md template via file imports, custom widgets, a built-in table-of-contents, and language-specific text via ${en:'…', ru:'…'} substitutions. Distributed as a CLI, a Maven plugin, and a Java library.

Markdown to Notion

Convert to Markdown Tools

Microsoft Word to Markdown

PDF / Office Documents to Markdown

• FolioMD - Free online PDF to Markdown converter with OCR, table extraction, and image support.

WordStar to Markdown

Various Note Formats to Markdown

Hypertext Markup Language (HTML) to Markdown

Source Code to Markdown

Technical Documentation to Markdown

Screencast to Markdown

JSON to Markdown

Book Services

Protocol

Meta

License

The awesome list is dedicated to the public domain. Use it as you please with no restrictions whatsoever.