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Olostep
Free structure extraction tool

HTML to JSON Converter

Turn raw HTML into structured JSON for debugging, extraction prototypes, AI workflows, and content audits. Paste markup and get a normalized page summary.

HTML to JSON

Structured JSON

Input
Output
Run the tool to see output here.
  • Headings
  • Links
  • Images
  • Tables

Developer experience

Convert HTML to structured JSON with AI extraction.

Use the Scrapes endpoint with llm_extract to turn any webpage into structured JSON fields defined by your prompt.

REST APIJSON outputAI extractionCustom schemaCountry targetingJavaScript rendering
Read the docs
curl --request POST \
  --url https://api.olostep.com/v1/scrapes \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "url_to_scrape": "https://example.com",
    "formats": ["json"],
    "llm_extract": {
      "prompt": "Extract the page title, headings, and main content"
    },
    "country": "US"
  }'

Extract page structure from HTML

HTML to JSON helps you inspect the meaningful parts of a document without writing a custom parser for every check.

  • Structured summary

    Extract title, meta description, headings, links, images, tables, and text preview.

  • Great for prototypes

    Quickly see what fields are available before building a scraper or parser.

  • Local conversion

    Pasted HTML is processed in your browser for fast local inspection.

How it works

Each tool is designed around a direct job: provide the input, get a useful output, and move it into your workflow.

  • 1

    Paste HTML

    Use a full document or a selected snippet.

  • 2

    Parse structure

    The tool extracts common page entities into JSON.

  • 3

    Copy JSON

    Use the output in tests, scripts, apps, or AI workflows.

Built for practical workflows

These tools are small on purpose: they solve the conversion job quickly, then point teams toward the API path when the workflow becomes recurring or high volume.

  • Parser design

    Inspect headings, links, images, and tables before writing extraction code.

  • Content audits

    Summarize the main structural elements of a page.

  • AI data preparation

    Convert markup into compact JSON for prompts and downstream processing.

Need URL to JSON extraction?

For live webpages, use Olostep URL to JSON to render the page and extract structured data with natural language or schemas.

Get API keysAPI docs

Frequently asked questions

Product & Capabilities

  • It means parsing HTML and returning useful document fields as structured JSON.

  • No. HTML to JSON parses pasted markup. URL to JSON fetches a live page and can use AI extraction.

  • It extracts title, description, headings, links, images, tables, and a text preview.

Usage & Automation

  • No. It parses the pasted HTML as text. Use Olostep for rendered live pages.

  • The output is a practical page summary rather than a full DOM serialization.

  • No. The conversion runs locally in the browser.

Pricing & Plans

  • Yes. The pasted HTML converter runs without API usage.

  • Use Olostep credits when you want to scrape live URLs, render JavaScript, or run AI extraction.

  • Yes. Olostep can use extraction instructions or schemas for live URL-to-JSON workflows.

HTML to JSON Converter | Extract Links, Headings, Images,…