Zero‑MD is a lightweight, zero‑configuration web component that fetches a remote Markdown file (or inline markdown) and renders it as styled HTML inside its own shadow DOM. It bundles fast parsers and renderers—marked for markdown, highlight.js for syntax highlighting, KaTeX for math, and Mermaid for diagrams—so developers can drop a single `<zero‑md>` tag into any vanilla‑JS or framework‑based site without additional setup. It’s aimed at web developers who want a simple, self‑contained way to display hosted markdown content with optional theming, code highlighting, and diagram support.