JSON Formatter & Validator - Pretty Print JSON Online

Free online JSON formatter, validator, and beautifier. Format, minify, and validate JSON data instantly. Features syntax highlighting, tree view, and JSON path finder.

 
Formatted JSON will appear here

JSON Path Finder

Tree View

JSON Quick Reference

  • • JSON keys must be strings in double quotes
  • • Values can be: string, number, boolean, null, array, or object
  • • No trailing commas allowed after the last element
  • • Use null (not None or undefined) for empty values

About This Tool

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's the most common format for APIs and configuration files.

What Does This Tool Do?

This JSON formatter helps you format (beautify), minify, and validate JSON data. It automatically detects syntax errors, provides syntax highlighting, and offers a tree view for easy navigation of complex JSON structures.

Key Features

• Format with 2 or 4 space indentation
• Minify JSON to reduce file size
• Real-time validation with error messages
• Syntax highlighting for better readability
• JSON path finder to locate specific values
• Interactive tree view for navigation

Frequently Asked Questions

What is JSON formatting?

JSON formatting (also called beautifying or pretty printing) adds proper indentation and line breaks to JSON data, making it easier to read and understand. This tool can format JSON with 2 or 4 space indentation.

How do I validate JSON?

Simply paste your JSON into the input field. The tool automatically validates it in real-time and shows a green checkmark for valid JSON or a red error message explaining what's wrong with invalid JSON.

What is JSON minification?

JSON minification removes all unnecessary whitespace (spaces, tabs, newlines) from JSON data, reducing file size. This is useful for production environments where bandwidth matters.

How do I find a specific value in JSON?

Use the JSON Path Finder feature. Enter a path like 'config.theme' or 'users[0].name' to locate and extract specific values from your JSON data.

Is my data safe?

Yes, absolutely. All JSON processing happens entirely in your browser. Your data never leaves your device and is never sent to any server.

What JSON syntax errors can this tool detect?

This tool detects all common JSON errors including: missing or extra commas, unquoted keys, single quotes instead of double quotes, trailing commas, and mismatched brackets.

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