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JSON formatter

Format and validate JSON with readable indentation.

Runs in your browser. Your input is not uploaded or saved.

Result

Add your input, then select Format JSON.

How to use it

Paste an API response or open a JSON file. Format it, then copy or download the result.

What to keep in mind

Checks JSON syntax, not whether the values are correct for your application.

Up to 2 MB per input, with smaller limits for complex operations. Clear removes the current input and result. Numbers use JavaScript precision; unsafe integers are rejected.

Related tools

All developer tools

Catch problems while customers use your app.

Braith reviews sampled app activity for likely failures and friction. Keep your error tracker for exceptions and stack traces.

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