JSON Formatter, Beautifier & Validator Online

Readable JSON data, everywhere.



Spacing length




Formatted text
Still empty
Please, provide a valid JSON input.


About JSON Formatter and Validator

JSON Formatter and Validator is a multi-purpose online tool to enhance and validate the format in your JSON files. This tool includes: validation of multiple JSON Standards, JSON formatter and JSON Pretty Print. Custom indentation supported with multiple spacing levels.


How to use JSON Formatter and Validator

Format JSON input

  1. Enter, paste or upload your text in JSON format.
  2. Choose the indentation level in the "Spacing length" section.
  3. Copy or save the formatted output in the "Formatted text" section.

Validate JSON input

  1. Enter, paste or upload your text in JSON format.
  2. Check the color wrapping the "Formatted text" section.
  3. In case of red color, review your json input because it's invalid. For green color, the input json is valid.

Examples of valid JSON format

  • Example 1: {"key": "value"}
  • Example 2: {12: "twelve", "20": "twenty", "car": "model"}
  • Example 3: {"key": {"nested": "object"}}