html-to-markdown

name	HTML to Markdown
slug	html-to-markdown
description	Convert HTML pages to clean Markdown for LLM consumption. Use when building RAG pipelines, preparing web content for AI context windows, or extracting readable content from HTML. Strips scripts, styles, nav, ads. Preserves headings, links, lists, code blocks, and tables.
category	Utility
tags	["html","markdown","conversion","rag","llm","content-extraction"]
price_per_call	0
input_schema	{"type":"object","properties":{"html":{"type":"string","description":"Raw HTML content to convert (max 5MB). Mutually exclusive with url."},"url":{"type":"string","description":"URL to fetch and convert. Mutually exclusive with html."}},"required":[]}
output_schema	{"type":"object","properties":{"markdown":{"type":"string","description":"Clean Markdown output"},"char_count":{"type":"number"},"line_count":{"type":"number"}}}
metadata	{"requires":{"env":["CLAW0X_API_KEY"]}}

HTML to Markdown

Convert any HTML content or URL into clean, LLM-ready Markdown. Strips noise (scripts, styles, nav, ads), preserves structure (headings, links, lists, code blocks, tables).

How It Works

1. Accept raw HTML string or fetch from URL (10s timeout, follows redirects)
2. Strip non-content elements: <script>, <style>, <nav>, <footer>, <aside>
3. Convert semantic HTML to Markdown: headings, bold, italic, links, images, code, lists, tables, blockquotes
4. Decode HTML entities, normalize whitespace
5. Return clean Markdown with metadata

Use Cases

• RAG pipeline preprocessing (web → Markdown → embeddings)
• LLM context window preparation
• Content extraction from web pages
• Documentation conversion
• Web scraping post-processing

Prerequisites

1. Sign up at claw0x.com
2. Create API key in Dashboard
3. Set environment variable: export CLAW0X_API_KEY="ck_live_..."

Pricing

FREE. No charge per call.

• Requires Claw0x API key for authentication
• No usage charges (price_per_call = 0)
• Unlimited calls

Example

Input:

{
  "url": "https://example.com/article"
}

Output:

{
  "markdown": "# Article Title\n\nFirst paragraph...\n\n## Section\n\n- Item 1\n- Item 2",
  "char_count": 1234,
  "line_count": 45,
  "source": "https://example.com/article"
}

Error Codes

Code	Meaning
400	Missing html/url, or URL fetch failed
401	Missing or invalid API key
500	Conversion failed (not billed)

About Claw0x

Claw0x is the native skills layer for AI agents.

GitHub: github.com/kennyzir/html-to-markdown