JSON Formatter / Prettifier

Beautify, validate, and format your JSON data instantly. Free online tool with no registration required.

How to Use JSON Formatter

Paste Your JSON

Copy and paste your JSON data into the input area. It can be minified, formatted, or even messy - our tool will handle it.

Click Format

Click the "Format JSON" button to beautify your JSON with proper indentation and line breaks.

Copy or Download

Copy the formatted JSON to your clipboard or download it as a file for use in your projects.

Features

✓Syntax highlighting for better readability
✓Automatic indentation and formatting
✓Error detection and validation
✓One-click copy to clipboard
✓Download formatted JSON as file
✓Works with any valid JSON data

Use Case Scenarios

API Development

Format API responses for better debugging and documentation.

{ "status": "success", "data": { "user": { "id": 123, "name": "John Doe" } } }

Configuration Files

Format JSON configuration files for better maintainability.

{ "database": { "host": "localhost", "port": 5432, "name": "myapp" }, "api": { "baseUrl": "https://api.example.com" } }

Data Analysis

Format large JSON datasets for easier analysis and review.

{ "sales": [ { "date": "2024-01-01", "amount": 1500, "product": "Widget A" } ] }

Code Reviews

Format JSON in pull requests for better code review experience.

{ "error": { "code": 404, "message": "Not Found", "details": "Resource not available" } }

Pro Tips

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Use keyboard shortcuts: Ctrl+A to select all, Ctrl+C to copy

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Large JSON files are automatically handled - no size limits

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Invalid JSON will show clear error messages with line numbers

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Formatted JSON maintains data integrity - only whitespace is changed