Markdown API

Free Markdown to HTML conversion, HTML to Markdown, stats, and preview. No signup. No API key.

Endpoints

POST /markdown/to-html

Convert Markdown to sanitized HTML. Supports fenced code, tables, TOC, footnotes, nl2br.

curl -X POST https://forge-node.tail2b516d.ts.net/markdown/to-html \
  -H "Content-Type: application/json" \
  -d '{"markdown": "# Hello\n\n**World**"}'

Field	Type	Required	Description
markdown	string	Yes	Markdown text (max 200,000 chars)
sanitize	boolean	No	Sanitize output HTML (default: true)
extensions	string[]	No	Override extensions (default: fenced_code, tables, toc, sane_lists, nl2br, footnotes)

POST /markdown/from-html

Convert HTML back to Markdown.

curl -X POST https://forge-node.tail2b516d.ts.net/markdown/from-html \
  -H "Content-Type: application/json" \
  -d '{"html": "<h1>Hello</h1><p><strong>World</strong></p>"}'

POST /markdown/stats

Compute word count, reading time (225 wpm), speaking time (150 wpm), headings, links, images, code blocks, list items.

curl -X POST https://forge-node.tail2b516d.ts.net/markdown/stats \
  -H "Content-Type: application/json" \
  -d '{"markdown": "# Title\n\nSome text with [a link](https://example.com)."}'

POST /markdown/preview

Return a standalone styled HTML preview page (for iframe embeds or direct viewing).

Rate Limits

120 requests per minute per IP. 200,000 character input limit. No API key needed.

Every tool on this site stays free, with no signup and no key. The same workshop also publishes paid skill packs — The Forge Content Marketing Skill Stack for Claude Code ($49) — and a free index of guides. Independent; not affiliated with Anthropic.