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JSON Formatter

Beautify messy JSON into a readable structure instantly.

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JSON ValidatorJSON MinifierJSON to CSV

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Paste API responses or config JSON and clean them up instantly.

JSON Validator Validate whether your JSON is syntactically correct. JSON Minifier Remove whitespace and line breaks from JSON. JSON to CSV Convert JSON arrays into CSV format.

TIPS

  • If formatting fails, check trailing commas and missing quotes first.
  • Format API responses before scanning keys to reduce noise.

About JSON Formatter

JSON Formatter is a free online tool that beautifies minified or messy JSON instantly. It is useful for checking API responses, logs, and configuration files.

  • No installation required. It runs directly in the browser.
  • Built for quick checks during development, operations, and lightweight data cleanup.
  • Includes a copy-friendly output area to shorten repetitive work.

FAQ

Is JSON Formatter safe to use?

The tool is designed to work in the browser, so your input can be handled without sending it to a server.

Can I increase indentation width?

The current default is a clean two-space format for readability.