JSON Formatter & Validator

Format, validate, and beautify your JSON data

Input JSON(Auto-validates as you type)
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JSON Tree View

Enter JSON to see the tree view

Auto Format

Real-time validation and formatting as you type

Tree View

Collapsible tree structure for easy navigation

Bracket Match

Hover brackets to highlight matching pairs

Minify

Compress JSON by removing whitespace

About This JSON Formatter & Validator Tool

What is a JSON Formatter?

A JSON formatter is a free online tool that helps developers format, validate, and beautify JSON (JavaScript Object Notation) data. Our JSON formatter makes it easy to read and debug JSON by adding proper indentation, syntax highlighting, and error detection. Whether you're working with API responses, configuration files, or data structures, this tool streamlines your JSON workflow.

Key Features

  • Auto-Validation: Real-time JSON validation and formatting as you type - no need to click validate button.
  • Tree View: Interactive collapsible tree structure to explore nested objects and arrays with ease.
  • Bracket Matching: Hover over brackets to highlight matching pairs for better readability.
  • Format JSON: Automatically beautify and indent your JSON data with proper spacing and line breaks for better readability.
  • Validate JSON: Instantly check if your JSON is valid and identify syntax errors with detailed error messages and line numbers.
  • Minify JSON: Compress your JSON by removing unnecessary whitespace to reduce file size for production use.
  • Statistics: View detailed information including file size, line count, total keys, and data type.
  • Copy to Clipboard: Easily copy formatted JSON with one click for use in your projects.
  • No Installation Required: Works entirely in your browser - no software download or signup needed.

Why Use Our JSON Validator?

JSON is widely used for data interchange in web applications, APIs, and configuration files. However, even a small syntax error can cause your application to fail. Our JSON validator helps you:

  • Quickly identify and fix JSON syntax errors
  • Improve code readability with proper formatting
  • Optimize JSON file size for production
  • Debug API responses and data structures
  • Ensure data integrity before deployment

How to Use This JSON Tool

  1. Paste or type your JSON data in the input textarea
  2. Watch as it automatically validates and formats in real-time
  3. Use the tree view to explore nested structures - click arrows to expand/collapse
  4. Hover over brackets to see matching pairs highlighted
  5. Click "Minify JSON" to compress your data for production
  6. Copy the formatted output with the "Copy" button

Who Can Benefit?

This JSON formatter is perfect for developers, data analysts, QA engineers, and anyone working with JSON data. Whether you're developing REST APIs, debugging web applications, or managing configuration files, this tool saves time and reduces errors.

Created by Foyaz Ullah Shahin, Senior Software Engineer with 10+ years of experience in backend development and API architecture.