JSON Formatter & Validator

Format, validate, and minify JSON data with syntax highlighting and error detection.

Input JSON

0 characters

Formatted Output

About JSON Formatter

JSON (JavaScript Object Notation) is a lightweight data-interchange format. This tool helps you format, validate, and minify JSON data for better readability and debugging.

Features:

  • Format JSON with customizable indentation
  • Minify JSON to reduce file size
  • Validate JSON syntax with detailed error messages
  • Copy and download formatted JSON
  • Character count and statistics
  • Sample JSON for testing

Common JSON Errors:

  • Missing quotes around property names
  • Trailing commas after last elements
  • Single quotes instead of double quotes
  • Unescaped special characters
  • Missing closing brackets or braces

JSON Rules:

  • Property names must be in double quotes
  • String values must be in double quotes
  • No trailing commas allowed
  • No comments allowed in JSON