utilkit

JSON Formatter

Beautify, minify, validate, and sort JSON in your browser.

Input JSON
Output JSON

Formatting options

How to use this JSON formatter

  1. Paste JSON into the input field.
  2. Beautify it for review, minify it for transport, or validate it before sharing.
  3. Use sorted keys when you want stable diffs for configuration files or API examples.

When JSON formatting helps

JSON formatting is useful when reviewing API responses, editing configuration, comparing examples in documentation, preparing payloads for tests, or shrinking data before pasting it into another tool.

How the formatter works

The formatter uses the browser's built-in JSON parser. It accepts valid JSON, preserves arrays and primitive values, can recursively sort object keys, and never sends pasted data to a server.

JSON formatter FAQ

Does this fix invalid JSON?
No. It reports parse errors so you can correct invalid syntax such as trailing commas, comments, or unquoted keys.
Will sorted keys change my data?
Sorting changes object key order only. Values, arrays, strings, numbers, booleans, and nulls are preserved.
Is my JSON uploaded?
No. Parsing and formatting run in your browser.

Other tools in this category.