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.