JSON Formatter & Validator

Format, prettify and validate JSON data online. Free JSON formatter with syntax checking.

Indent:

Input JSON

Output

Output will appear here

How to Use JSON Formatter & Validator

1Paste your raw or minified JSON into the input field on the left.
2Click "Format" or use the indent size selector to prettify the output.
3If the JSON is invalid, an error message will highlight the problem.
4Use the "Copy" button to copy the formatted JSON to your clipboard.

Frequently Asked Questions

What is JSON formatting?

JSON formatting (or "prettifying") adds consistent indentation and newlines to JSON data, making it easier to read and debug. Minified JSON has all whitespace removed for smaller file sizes.

Is my JSON data sent to a server?

No. This tool works entirely in your browser. Your JSON data never leaves your device.

Can I validate JSON with this tool?

Yes. The formatter validates your JSON as you type and shows descriptive error messages if the syntax is invalid.

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