Tools / JSON Formatter

JSON Formatter

Beautify, minify and validate JSON — with precise error locations. Runs locally.

How to format JSON

  1. Paste JSON into the input box.
  2. Press Beautify for readable indentation or Minify to strip every unnecessary byte.
  3. Invalid input? You get the exact line and column of the error.

Frequently asked questions

Can it tell me where my JSON breaks?

Yes — on parse errors you get the exact line and column, usually a stray comma, an unquoted key or a trailing comma.

Does it sort or modify my keys?

Never — beautifying only changes whitespace. Key order is preserved exactly as you pasted it.

Is private API data safe here?

Yes — parsing happens in your browser; responses with customer data never leave your machine.