Developer Tools / Free tool

JSON Formatter and Validator

Inspect and clean up JSON without sending it to a server. The input is parsed as data and never executed as code.

Your JSON stays in this browser and is never executed.

Input / Never executed

JSON input

0 B / 1 MB

Paste JSON to format, minify, or validate. Input is parsed as data and is never evaluated as code.

Output / Local result

Output appears after a successful check.

Sort object keysIndentation

Method

Boundaries

Input is limited to 1 MB and 100 levels of nesting to keep the page responsive.
Sorting changes object-key order but preserves array order and values.
JSON does not preserve comments, trailing commas, undefined values, or duplicate object keys.
Very large valid documents beyond these limits need a desktop editor or streaming parser.

Keep working

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