OpenGraph.io
Log inStart Free
Extract

HTML to Markdown API

Convert HTML and URLs into clean, LLM-ready Markdown for AI apps, RAG pipelines, research workflows, content processing, and internal tools.

Start Free View Docs
GETapi.opengraph.io/api/1.1/extract/markdown
?site=https://example.com/api-design-guide
Response 200 OK
# The Complete Guide to API Design
Modern APIs should be consistent, predictable, and easy to work with for any developer who uses them.
## Key Principles
- Consistency across all endpoints
- Clear and useful error messages
- Versioning strategy from the start
[Read full guide](https://example.com/api-design)
1B+URLs processed
1,000sof developers

Powering link previews, metadata extraction, Markdown conversion, and URL intelligence workflows at scale.

Use cases

Turn web pages into usable Markdown

The HTML to Markdown API helps developers convert messy web content into clean, structured Markdown that is easier to store, search, summarize, and pass into AI systems.

RAG ingestionLLM data pipelinesAI agent contextResearch workflowsContent summarizationDocumentation processingInternal knowledge toolsWeb content cleanup
Try the free Webpage to Markdown Tool
API response

Clean Markdown from URLs or HTML

Send a webpage URL or HTML content and receive Markdown that preserves the useful structure of the page while reducing the noise of raw HTML.

Clean Markdown

Readable Markdown output built from the meaningful content of the page.

Headings and structure

Preserved heading hierarchy so downstream systems understand page organization.

Paragraphs and text

Main body content converted into clean, readable text blocks.

Links

Links preserved in Markdown format for context and citations.

Lists and tables

Structured page elements converted into Markdown-friendly formats.

Page title and source URL

Useful page-level context returned alongside the Markdown output.

Reduced HTML noise

Cleaner content without navigation, scripts, layout markup, or boilerplate HTML.

LLM-ready content

Markdown output easier to pass into summarization, retrieval, and AI workflows.

API comparison

Choose the right Extract API

Three extraction APIs, three different jobs. Here is how to know which one fits your use case.

HTML to Markdown API

This page

Convert webpages or HTML into clean Markdown.

Use when:

You need readable Markdown for AI apps, RAG pipelines, research, summarization, or content processing.

Learn more

Web Scraping API

Retrieve webpage content without managing scraping infrastructure.

Use when:

You need access to the underlying page content and want more control over how your system processes it.

Learn more

Content Extraction API

Extract readable or structured content from webpages.

Use when:

You need cleaner page content, structured fields, or extracted article-style data rather than full raw HTML.

Learn more
AI & RAG workflows

Better web content for LLMs and RAG pipelines

Raw HTML is noisy. It often includes navigation, scripts, layout markup, tracking code, footers, and unrelated page elements. Markdown gives AI systems a cleaner version of the page while preserving the structure that matters.

  • Convert webpages into cleaner LLM input with one API call
  • Reduce noisy HTML before sending content to a model
  • Preserve headings, paragraphs, links, lists, and tables
  • Prepare web content for RAG ingestion at scale
  • Create cleaner context for AI agents and assistant workflows
  • Store webpage content in a more readable, portable format
  • Support summarization, research, and internal knowledge workflows
Start Free View Docs
Messy HTML / webpageNavigation, scripts, layout, boilerplate
Cleaned contentNoise removed, structure preserved
Structured MarkdownHeadings, paragraphs, links, lists
AI / RAG workflowLLM input, RAG ingestion, agent context
Find the right fit

Use the free tool for one-off conversions. Use the API for workflows.

Webpage to Markdown Tool

Best for manually converting one URL.

Use it when you want to paste a webpage and quickly see its Markdown output — no code required.

Try Webpage to Markdown

HTML to Markdown API

Best for automated Markdown conversion inside your app.

Use it when you need to convert URLs or HTML into Markdown at scale for AI apps, RAG pipelines, internal tools, content workflows, or customer-facing products.

Start Free
How it works

From URL to Markdown in seconds

01

Send a URL or HTML

Pass a public URL or raw HTML content to OpenGraph.io. That is the entire integration.

02

OpenGraph.io processes the page

The platform extracts useful content and converts it into clean, structured Markdown.

03

Receive Markdown output

Use the Markdown in your app, AI workflow, RAG pipeline, content system, or internal tool.

Developer experience

Built for developers working with web content

Simple API access

Start with an API key and convert URLs or HTML into Markdown. No SDK required.

Playground available

Test real URLs before wiring the API into your workflow — no code needed to evaluate.

Docs when you need them

Full API reference with parameters, response shapes, and code examples.

Free requests to start

The free tier includes 100 requests per month. No credit card required.

Works with URL workflows

Use Markdown output alongside metadata, screenshots, previews, embeds, and audits.

Useful for AI builders

Designed for teams building LLM apps, research tools, RAG pipelines, and agent workflows.

Extract family

Build complete URL extraction workflows

HTML to Markdown is part of OpenGraph.io’s Extract family. Pair it with other URL intelligence tools when your workflow needs metadata, screenshots, raw page access, or agent-ready context.

Extract product familyWeb Scraping APIContent Extraction APIWebpage to Markdown ToolLink Preview APIScreenshot APIMCP Server for AI Agents

FAQ

An HTML to Markdown API converts HTML content or webpages into Markdown that is easier to read, store, search, and use in applications — including AI systems, RAG pipelines, and internal tools.
Yes. The API accepts a public URL and returns Markdown output that preserves the useful structure of the page — headings, paragraphs, links, lists, and tables.
The free Webpage to Markdown Tool is for one-off manual conversions. The API is for automated workflows inside apps, AI systems, RAG pipelines, and internal tools.
Markdown is cleaner and easier for language models to process because it removes navigation, layout markup, scripts, and boilerplate noise while preserving useful content structure.
Not exactly. A web scraping API retrieves raw page content. The HTML to Markdown API focuses on converting that content into clean, structured Markdown output.
The goal is to preserve useful structure — headings, paragraphs, links, lists, and tables — while removing layout and markup noise that adds no value to downstream processing.
Full documentation — including request parameters, response schema, and code examples — is available in the API reference.

Start converting URLs to Markdown

Use OpenGraph.io to convert HTML and webpages into clean Markdown for AI apps, RAG pipelines, research workflows, and internal tools.

Start FreeView Docs

No credit card required. Free requests included.