html-to-markdown

name	html-to-markdown
description	Convert a URL or HTML into clean Markdown with metadata using markmaton. Handles browser capture for JS-heavy pages and deterministic HTML-to-Markdown conversion in one skill.

HTML to Markdown

Composes with

• Use for — capture-a-web-page tasks where browser-rendered HTML or structured Markdown is needed.
• Wraps — nodriver (CDP-based headless browser capture for JS-heavy pages, with Playwright Chromium discovery) and markmaton (HTML→Markdown with main-content extraction, metadata, and link/image inventory). See references/integration-patterns.md for browser-vs-fetch guidance.
• Outputs — JSON envelope by default (markdown body + metadata + links + images + quality signals). Use --output-format markdown when only the raw Markdown body is needed.

Converts a URL or HTML into clean Markdown plus metadata, links, images, and quality signals.

From a URL

Capture the page and convert in one pipeline:

uv run --script scripts/capture_html.py <url> \
  | uv run --script scripts/markmaton_convert.py --from-capture --output-format json

The capture script outputs a JSON envelope by default. --from-capture reads it and extracts html, url, final_url, and content_type automatically — no context lost, URL typed once.

• Add --wait-selector <css> or --wait-text <string> to the capture step for pages that need a readiness signal.
• Prefer a simple fetch over browser capture for static articles, wikis, and server-rendered docs.

From HTML

uv run --script scripts/markmaton_convert.py --html-file page.html \
  --url <url> --output-format json

Or from stdin:

echo "$html" | uv run --script scripts/markmaton_convert.py --url <url>

Pass --url when available — it improves link resolution and canonical metadata.

Key defaults

• Output: json. Use --output-format markdown for raw Markdown only.
• Main-content extraction: on. Use --full-content to disable.
• Capture: always headless. Timeout 10s, override with --timeout.
• Browser discovery: user's Chrome → user's Chromium → Playwright's Chromium.

References

Read only when needed:

• references/usage.md — full CLI reference for both scripts
• references/integration-patterns.md — browser vs fetch guidance, contracts, parser defaults