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JSON Formatter Online - Free JSON Viewer

Format, validate, and visualize JSON instantly with this free JSON formatter tool. Fast, secure, and fully client-side.

Input JSON

Formatted Output

Formatted JSON will appear here

What is a JSON Formatter?

A JSON (JavaScript Object Notation) formatter is a web-based utility that takes unorganized, minified, or disorganized JSON data and converts it into a structured, readable format. It automatically applies proper indentation and syntax highlighting, making it easier for developers to read, debug, and validate data structures.

How to use our free JSON formatter?

  1. Paste your raw or minified JSON string into the Input JSON text area.
  2. Click the Format button to instantly beautify your data.
  3. If your JSON contains syntax errors, our tool will highlight them and display an Invalid JSON format warning.
  4. Once successfully formatted, you can quickly copy the result to your clipboard or download it as a .json file.

Example JSON Data

Before formatting:

{"id": 1,"name": "ToolTree","isAwesome": true,"features": ["Fast", "Secure"]}