JSON Formatter

Format and validate JSON online.

json

Format and validate JSON in your browser. Your input is not sent to a server.

Uses JavaScript numbers: integers beyond the safe integer range may lose precision. Duplicate object keys keep the last value.

JSON input

Formatted JSON

Indentation

JSON Formatter is a free online tool that allows you to format and validate JSON data. It helps you to make your JSON data more readable and easier to work with by adding indentation and line breaks.

How to format JSON

1Paste your JSON into the input field.
2Choose 2 spaces, 4 spaces, or compact output.
3Select Format JSON to validate and format the input.
4Copy the result, or correct the reported syntax error and try again.

JSON Formatter

How to format JSON

Frequently Asked Questions