Mindmaps from markdown, on your own Solid pod. Feed it a JSON-LD document whose payload is markdown, and it renders an interactive markmap — pan, zoom, collapsible branches. One build-free HTML file; the markmap/d3 libraries are vendored (pinned, no CDN at runtime).

A JSON-LD envelope, markdown payload — headings become branches, list items become leaves:

{ "@context": { "schema": "https://schema.org/", "mm": "https://solid-apps.github.io/markmap/ns#" },
  "@id": "#this", "@type": "mm:Markmap", "schema:name": "My map",
  "schema:text": "# Root\n## Branch A\n- leaf\n## Branch B\n- leaf" }

Markmap frontmatter inside the markdown is honored (markmap: {colorFreezeLevel: 2, …}). The reader is tolerant: mm:markdown or a bare markdown key also work, as does a prebuilt markmap node tree under mm:root.

1. Data island — paste your JSON-LD into the <script type="application/ld+json" id="markmap-data"> block in index.html (fork-by-copy, like webprompts).
2. ?src=<url> — any JSON-LD doc… or any raw .md URL. Point it at a page from the pages/notes apps and get a mindmap of it for free: …/markmap/?src=/public/pages/my-page.md
3. sample.jsonld — the built-in demo ("Your pod, mapped").

Maps live on your pod at /public/markmap/<name>.jsonld by convention (Content-Type: application/ld+json); "fork" = copy the document to your own pod.

Hit Edit (⌘E) and the markdown opens in a pane beside the map — the map re-renders live as you type. Save (⌘S) writes back to your pod via the universal xlogin sign-in:

• A map loaded from ?src= on your pod saves back to the same document — JSON-LD docs save as JSON-LD, and a raw .md saves back as markdown, which makes markmap a mindmap editor for your pages/notes documents, not just a viewer.
• The sample, a data island, or a cross-origin ?src= (someone else's map) goes through Save as… into your /public/markmap/ — that's the fork.
• New starts a blank map. The header title follows the # root heading.

Maps are also live: the app subscribes to the pod's Solid WebSocket notifications, so when another client — an AI agent regenerating a map, or you on another device — changes the document you're viewing, it re-renders in place. Unsaved local edits are never clobbered; you get a warning instead (your Save then overwrites).

Static — open index.html, or install via the store to /public/apps/markmap/.

AGPL-3.0-only for the app. Vendored libraries keep their upstream licenses: markmap (MIT), d3 (ISC).