JSON Formatter & Validator

How to Use the JSON Formatter

Paste your raw or minified JSON into the input box on the left, then click Format / Beautify. The output panel instantly shows your JSON properly indented with syntax highlighting. You can also minify JSON to remove all unnecessary whitespace for production use.

JSON Validation

The tool automatically validates your JSON as you type. If there's a syntax error, it highlights exactly what went wrong so you can fix it quickly. Common issues include trailing commas, unquoted keys, and mismatched brackets.

When to Use JSON Formatting

• Debugging API responses that are returned as a single line
• Reading configuration files more easily
• Validating JSON before sending it to a server
• Minifying JSON to reduce payload size in production
• Sharing readable JSON with teammates

Privacy

Your JSON never leaves your browser. All formatting and validation happens locally using JavaScript. We don't store, transmit, or log any data you enter.