Format JSON

Beautify JSON with readable indentation directly in your browser.

Browser-only processing: your JSON is formatted locally and never uploaded.

Ferramentas Relacionadas

About JSON Formatter

JSON Formatter makes JSON easier to read by adding indentation and line breaks while keeping the data unchanged. It is useful for API responses, configuration files, debugging, and code review. Formatting happens in your browser so sensitive JSON stays local.

How to Format JSON Online
  1. 1
    Paste JSON into the editor

    Copy your JSON object or array into the input panel.

  2. 2
    Choose indentation and format

    Pick the indentation size you want and run the formatter to generate readable output.

  3. 3
    Copy or download the result

    Review the formatted JSON, then copy it or save it as a JSON file.

Perguntas Frequentes

Does formatting change my JSON data?

No. Formatting only changes whitespace and indentation, not the keys, values, or structure.

Can I choose different indentation sizes?

Yes. You can switch between several indentation sizes before formatting the JSON output.

Is this JSON formatter private?

Yes. The formatting runs locally in your browser, so your JSON is not sent to our servers.

What happens if the JSON is invalid?

The tool shows that the JSON is invalid and reports the error location when the browser provides it.

Por Que Escolher Let Compress?
  • Sem necessidade de fazer upload de arquivo - 100% processamento no lado do cliente
  • Gratuito para usar sem necessidade de cadastro
  • Comprima vários arquivos em lote por vez
  • Algoritmos de compressão otimizados para melhores resultados
  • Funciona em todos os navegadores e dispositivos modernos
  • Sem limites de tamanho de arquivo ou cotas de compressão