What is md2html?

md2html is a skill for AI coding assistants like Claude Code that transforms long, text-heavy Markdown documents into polished, readable HTML pages. The problem it solves is simple: when an AI generates a detailed plan, spec, or system design, the output is often a wall of plain text that nobody wants to read. md2html takes that Markdown file and converts it into a self-contained HTML page with a sidebar table of contents, light and dark themes, Mermaid diagrams for flowcharts, step-by-step timeline cards, and side-by-side comparison tables. You trigger it by typing a slash command like /md2html plan.md inside your AI agent session. The agent reads your Markdown file, analyzes the structure, and decides which parts should become diagrams, which should be step cards, and which should be callout boxes. The result is a single HTML file you can email, drop into Slack, or open offline, no servers, no build tools, no dependencies needed. It works across multiple AI agents and automatically matches the language of your source document, with built-in support for eight languages including English, Vietnamese, Chinese, Japanese, and Korean.