JSON Formatter & Validator

Format, validate, and beautify JSON data instantly with our free online JSON formatter. Supports minification, syntax highlighting, and error detection. No registration required.

Format & Validate JSON

Beautify, validate, and minify JSON data with syntax highlighting and error detection

Formatted JSON will appear here

About JSON Formatting & Validation

JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format that's easy for humans to read and write, and easy for machines to parse and generate. Our JSON formatter helps you work with JSON data more effectively.

Key Features

  • Format & Beautify: Transform minified JSON into readable, properly indented format
  • Validation: Check JSON syntax and identify errors with detailed error messages
  • Minification: Compress JSON by removing unnecessary whitespace
  • Statistics: Get insights about your JSON structure and size
  • Syntax Highlighting: Color-coded output for better readability

Common JSON Use Cases

  • API response formatting and debugging
  • Configuration file validation
  • Data structure visualization
  • Web development and testing
  • Database query result formatting

JSON Best Practices

  • Use double quotes for strings (not single quotes)
  • Ensure proper comma placement (no trailing commas)
  • Use consistent indentation for readability
  • Validate JSON before using in production
  • Keep JSON structure as flat as possible when feasible
Privacy Notice

All JSON processing is done locally in your browser. Your data is never sent to our servers, ensuring complete privacy and security.