HTML to JSON Converter

Web scraping, AI training-data preparation, headless content extraction, and DOM analysis all benefit from a structured representation of HTML. JSON is the natural choice — it preserves the tree structure, attributes, and text content in a format every language can parse.

Why convert HTML to JSON?

JSON gives you queryable, language-agnostic access to a webpage's structure. You can run jq queries, feed it to LLMs as training data, or store it in a NoSQL database. Unlike raw HTML strings, JSON is type-safe, schema-friendly, and trivially traversable.

Our JSON output schema

Each HTML element becomes an object with three optional keys: "tag" (the lowercase element name), "attributes" (an object of name → value), "text" (visible text content), and "children" (an array of nested element objects). Empty branches are omitted to keep output compact.

Browser-grade parsing

We use the native DOMParser API — the same parser your browser uses to render pages. This means malformed HTML (unclosed tags, missing quotes, etc.) is handled gracefully, just as it would be in a real browser. No fragile regex, no parsing surprises.

Common use cases

• Web scraping — extract structured data from any HTML
• LLM training data — convert articles to JSON for fine-tuning
• AI agent input — feed structured page context to GPT/Claude
• DOM diffing and version tracking
• Email template inspection (extract content from MJML output)
• Migrating CMS content from HTML to a JSON-based store
• Static site analysis — sitemaps, link graphs, content audits

Whether you're building a scraper, prepping data for an AI model, or just want to inspect a page's structure as a tree, this tool turns HTML into clean, traversable JSON in one click.