JSON Viewer for API Responses

About This Tool

Working with REST APIs, GraphQL endpoints, and webhooks means constantly processing JSON response data. Raw API responses are typically minified — stripped of all whitespace and line breaks to minimize payload size — making them virtually impossible to read without formatting. This tool transforms those compact responses into well-structured, readable output that reveals the data hierarchy and makes it easy to locate specific values. Paste a response from Postman, cURL, browser DevTools Network tab, or any API client, and instantly see the formatted result. The tool validates the response structure during processing, catching malformed responses that might cause subtle bugs in your application. For developers debugging production issues, this immediate visibility into API data structures is invaluable.

What is JSON Viewer?

A JSON viewer provides a detailed structural analysis of JSON data, displaying every path from root to leaf nodes with the corresponding value and data type. Unlike a simple formatter that only adds indentation, a viewer deconstructs the JSON into a flat path representation (like $.users[0].name) that makes it easy to identify specific values within deeply nested structures. This is invaluable for understanding complex API responses, navigating large configuration objects, and building queries or transformations that target specific data paths. The viewer shows object key counts, array lengths, value types (string, number, boolean, null), and the full dot-notation path to every element.

How to Use This Tool

1. Paste your JSON.
2. Click Inspect JSON.
3. Browse paths, values, and types.
4. Use paths to reference data in your code.

Common Use Cases

• Formatting raw API response bodies for debugging
• Processing webhook payloads for analysis
• Cleaning up GraphQL query responses
• Inspecting third-party API data structures

Examples

{"users":[{"name":"Alice","roles":["admin","editor"]},{"name":"Bob","roles":["viewer"]}]}

Explore More Variations