JSON Formatter & Validator

About JSON Formatter

This free online JSON formatter lets you quickly format, validate, and beautify JSON data. All processing happens entirely in your browser - your data never leaves your device.

Features

• Format JSON with customizable indentation (2 spaces, 4 spaces, or tabs)
• Validate JSON and get clear error messages for invalid data
• Minify JSON by removing all whitespace
• Sort object keys alphabetically
• One-click copy to clipboard

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate. JSON is commonly used for API responses, configuration files, and data storage.

Common Use Cases

• Formatting API responses for debugging
• Validating JSON configuration files
• Cleaning up minified JSON data
• Preparing JSON for documentation