format · validate · convert · runs locally

JSON Formatter & Beautifier

Paste minified or messy JSON and beautify it into clean, indented JSON (2 spaces, 4 spaces, or tabs). It validates as you type and flags errors with the exact line and column.

Frequently asked questions

How do I beautify JSON?

Paste it above and press Format (or just paste — it formats live). Pick 2 spaces, 4 spaces, or tab indentation.

Does it validate too?

Yes. Invalid JSON is flagged with the error and the exact line and column.