Website to JSON Converter
Extract structured JSON from any webpage. Describe what you want in plain English, no CSS selectors, no XPath. Works on JavaScript-rendered pages.
Powered by Spidra’s AI extraction API. Real browser rendering, not a simple HTML parser.
Need Markdown instead of JSON?
Try the Website to Markdown converter →How the extractor works
From URL to structured JSON in three steps,describe what you need in plain English.
Paste a URL
Enter any public webpage URL. Spidra renders it in a real headless browser,JavaScript-heavy SPAs, React apps, and dynamic pages all work.
Describe what to extract
Type a plain-English prompt: 'Get product name, price, and rating' or 'Extract all job listings'. No selectors, no XPath,just describe the data you want.
Download clean JSON
Get structured, typed JSON in seconds. Copy to clipboard or download the .json file for your API, database, or AI pipeline.
Why use Spidra’s Website to JSON extractor?
Describe what to extract. The AI figures out the rest.
Natural language extraction
Describe what to extract in plain English. Spidra's AI reads the rendered page and maps your instructions to structured fields,no CSS selectors or XPath required.
Handles JavaScript-rendered pages
Spidra runs a full headless Chromium browser, so React, Vue, Angular, and dynamic content all render completely before extraction. Static HTTP parsers miss all of this.
Type-aware structured output
Prices come back as numbers, dates as ISO strings, booleans as booleans. The AI infers types automatically so your JSON is immediately usable in any downstream system.
No schema required upfront
Skip the boilerplate of defining a JSON schema first. Describe the data in a sentence and Spidra infers the structure. For strict schemas, use the full API.
Extracts data through CAPTCHAs automatically
Most scrapers return empty results when a CAPTCHA fires. Spidra solves them in the background and keeps going,you just get the data.
reCAPTCHA v2 & v3
By Google
The world's most common CAPTCHA,present on tens of millions of sites. Spidra solves both the checkbox and invisible (score-based) variants without any user interaction.
hCaptcha
Used by Cloudflare & others
A privacy-first reCAPTCHA alternative deployed by major platforms. Solved automatically alongside browser rendering so your extraction request goes through every time.
Cloudflare Turnstile
By Cloudflare
The most aggressive modern bot challenge. Turnstile uses browser fingerprinting and behavioral signals. Spidra handles it transparently so your extractions are never blocked.
CAPTCHA solving is included for every extraction,no extra configuration, no extra cost.
What developers use Website to JSON extraction for
Structured data powers every modern application. Here’s how teams use web-to-JSON extraction today.
E-commerce price monitoring
Extract product names, prices, availability, and images from any retailer. Track price changes and build comparison tools without screen scraping overhead.
Job board aggregation
Pull structured job listings,title, company, location, salary, requirements,from dozens of boards and normalize them into a single JSON schema.
Real estate data extraction
Convert property listing pages into structured JSON with address, price, bedrooms, square footage, and agent contact details for analysis and alerting.
News & content feeds
Extract article title, author, publish date, tags, and body text from any publication. Build custom content aggregators and news monitoring tools.
Lead generation & CRM enrichment
Convert company About and Contact pages into structured JSON with company name, employees, industry, social links, and contact emails.
AI training datasets
Extract structured labeled data from the web at scale for fine-tuning, evaluation datasets, and knowledge base construction.
What does Website to JSON mean?
Converting Website to JSON means parsing the content of a webpage and transforming it into a structured data format that can be consumed by APIs, databases, AI models, and application code.
Unlike raw HTML,which is a document format full of presentational tags, navigation boilerplate, and style markup,JSON is a clean, typed data format that computers can process directly. A product page in JSON becomes {"name":"...", "price": 29.99} instead of hundreds of lines of nested <div>.
The challenge is that most webpages today are rendered by JavaScript frameworks, so a plain HTTP fetch returns an empty shell. You need a real browser to get the data a user would actually see.
AI extraction vs. traditional scraping
Traditional web scrapers extract data by targeting specific CSS classes or XPath selectors. This requires reading the page source, identifying the right selectors, and maintaining them as the site changes,which is brittle and time-consuming.
AI extraction works differently: you describe what you want in natural language, and the model figures out where that data lives on the page. When the site changes its layout, the description still works because it targets meaning, not markup.
Spidra combines both approaches: AI for flexibility and resilience, with optional CSS selector and XPath precision for developers who need guaranteed field mapping. The result is structured JSON that’s immediately usable downstream.
What the output looks like
For a product page with the prompt “Extract product name, price, rating, and availability”, the extractor returns clean, typed JSON like this. Fields match your description exactly,no parsing required.
- Strings, numbers, booleans, and arrays are typed correctly
- Nested objects for complex fields like reviews or variants
- Arrays for lists of items like product images or features
- Pretty-printed and immediately copy-pasteable
{
"name": "Wireless Noise-Cancelling Headphones",
"price": 299.99,
"currency": "USD",
"rating": 4.7,
"review_count": 2841,
"availability": "In Stock",
"colors": ["Black", "Silver", "Midnight Blue"],
"features": [
"30-hour battery life",
"Active noise cancellation",
"Bluetooth 5.2"
]
}Frequently asked questions
Everything you need to know about extracting JSON from webpages with Spidra.
