Is this JSON Formatter free?

Yes, completely free. No registration, no ads, no tracking. Your data never leaves your browser.

Does it validate JSON?

Yes, it validates JSON in real-time as you type and shows error messages for invalid JSON.

JSON Formatter

Format, validate, and minify JSON data instantly.

Indent:

Input

Output

What is JSON Formatter?

A JSON formatter (also known as JSON beautifier or pretty printer) takes minified or compact JSON data and formats it with proper indentation and line breaks, making it easy to read and debug.

Features

Real-time JSON validation as you type
Customizable indentation (2 spaces, 4 spaces, or tabs)
JSON minification for production use
One-click copy to clipboard
100% client-side — your data never leaves your browser

Common Use Cases

Debugging API responses from REST or GraphQL endpoints
Formatting configuration files (package.json, tsconfig.json)
Validating JSON payloads before sending to an API
Minifying JSON data to reduce payload size

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