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JSON Formatter

Format and beautify your JSON data with this easy-to-use online JSON Formatter. Perfect for developers and analysts working with APIs, configs, or structured data.

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JSON Formatter & Validator

About JSON Formatter & Validator

Our JSON Formatter and Validator is an essential tool for developers working with JSON data. JSON (JavaScript Object Notation) has become the universal format for data exchange between servers and web applications. This tool helps you quickly format, validate, and minify your JSON code for better readability and efficiency.

Properly formatted JSON is crucial for debugging, documentation, and maintaining clean code. Our formatter provides syntax highlighting, proper indentation (with customizable spaces), and error detection to help you work with JSON more effectively. Whether you're working with API responses, configuration files, or data storage, this tool will save you time and prevent errors.

Key Features:

  • Smart Formatting: Automatically adds proper indentation and line breaks
  • Syntax Validation: Detects and highlights errors in your JSON structure
  • Minification: Reduces file size by removing unnecessary whitespace
  • Readable Output: Color-coded syntax for better visual parsing
  • Dark Mode: Reduces eye strain during extended coding sessions

JSON is used everywhere in modern web development - from REST APIs to NoSQL databases like MongoDB. Our formatter supports all valid JSON formats including arrays, nested objects, and all data types (strings, numbers, booleans, null). For more advanced JSON manipulation techniques, check out our comprehensive JSON guide on our blog.

Common Use Cases:

  1. API Development: Format responses for better client-side consumption
  2. Debugging: Identify structural issues in complex JSON data
  3. Configuration Files: Maintain clean, readable settings files
  4. Data Analysis: Make large datasets more navigable
  5. Education: Learn JSON syntax with visual feedback

This tool works entirely in your browser - your JSON data never leaves your computer, ensuring complete privacy for sensitive information. The formatter handles large JSON files efficiently, making it suitable for both small snippets and complex data structures.

Pro Tip: Use Ctrl+Enter (Cmd+Enter on Mac) in the input area to quickly format your JSON. Bookmark this tool for easy access during development!
JSON Quick Reference
Valid JSON Data Types:
  • Strings "text"
  • Numbers 42 or 3.14
  • Booleans true/false
  • Null null
  • Arrays [...]
  • Objects {"key":"value"}
Common Errors:
{
  "appName": "JSON Formatter",
  "version": "1.0.0",
  "features": ["format", "validate", "minify"],
  "stats": {
    "users": 15000,
    "rating": 4.8
  },
  "isActive": true
}

Key Features

Beautify Raw JSON

Easily convert minified or unreadable JSON into a well-indented, human-readable format for clarity and debugging.

Validate JSON Structure

Instantly detect syntax errors and invalid structures in your JSON input to ensure your data complies with JSON standards.

Interactive Viewer

Toggle between raw, formatted, and collapsible tree view to explore complex nested JSON objects with ease.

Copy & Download Options

Quickly copy the formatted JSON to your clipboard or download it as a `.json` file for use in your applications or projects.

Error Highlighting

Highlights specific lines or characters where parsing errors occur to help you correct mistakes fast.

Privacy-First Design

All formatting happens on your device. Your JSON never gets uploaded or stored — making it secure for sensitive data.

Minify Option

Need compact output for storage or transport? Use the minify button to reduce your JSON to a single-line format.

Free & No Signup

100% free to use without registration. Unlimited formatting right from your browser.

Frequently Asked Questions

It formats and beautifies SQL code to make it cleaner and easier to read.

Most common dialects including MySQL, PostgreSQL, SQLite, and SQL Server are supported.

Yes, it supports nested queries, joins, subqueries, and more.

Yes, it works in your browser and does not store or upload any data.

Yes, the SQL Formatter is 100% free with no login required.

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