🛠️ API Debugging Assistant

A professional utility to clean, analyze, and document your API data. Perfect for handling webhooks, REST responses, and complex JSON structures.

1
Format
2
Analyze
3
Document
1

Paste & Validate JSON

Fix syntax errors and beautify raw API strings.

Formatted JSON will appear here...
2

Transform to CSV

Flatten hierarchical data for easy analysis in Excel or Sheets.

💡 Pro Tip: We've automatically identified the data arrays in your payload and flattened nested objects using dot notation.

Why flatten JSON?

Hierarchical JSON is hard to analyze in spreadsheets. Flattening converts `user.address.city` into a single column, making it sortable and filterable in Excel or Google Sheets.

Security Note

This transformation happens entirely in your browser memory. Your API keys, tokens, or sensitive user data are never transmitted to our servers.
CSV output...
3

Generate Schema / JSON-LD

Create standardized documentation for your API response.

Schema will appear here...

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✨ Pro Tips for API Debugging

  • Webhooks: Paste raw webhook payloads here to quickly see the data structure and field names.
  • Null Handling: Our CSV converter automatically handles missing keys in large arrays to keep your columns aligned.
  • Privacy: We never log your data. All formatting and conversion happens locally in your browser's V8 engine.

Frequently asked questions

Can I test POST requests?

Yes, you can configure the method, headers, and body for any HTTP request.

Does it support CORS?

Since it runs in the browser, it is subject to CORS policies. You may need a proxy or extension for some requests.

Is it like Postman?

It is a lightweight, browser-based alternative for quick API testing without installing software.

Are my API keys safe?

Your requests are made directly from your browser. We do not proxy or log your keys or sensitive data.

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