JSON Formatter

Format, validate, and minify JSON online with a fast, easy-to-use developer workspace.

JSON Formatter

Free tool

Turn messy JSON into clean, readable data. Validate syntax and minify payloads directly in your browser.

Browser-based processingDeveloper-friendly editor

Input lines

Lines in your JSON input

Characters

Input character count

Input size

0 B

UTF-8 encoded size

JSON workspace

Paste your data, choose an operation, and inspect the result.

Input JSON

Paste or edit your JSON

Editable

Loading editor...

0 lines0 characters

Formatted output

Your result appears here

Read only

Nothing to display yet

Enter JSON and select Beautify or Minify to see your formatted output here.

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Beautify JSON

Add consistent indentation and line breaks to make nested objects and arrays easier to read.

Minify JSON

Remove unnecessary whitespace to create compact JSON for payloads and data transfer.

Validate JSON

Check JSON syntax and identify parsing errors before using data in your application.

What is a JSON Formatter?

A JSON formatter converts JavaScript Object Notation (JSON) into a structured, readable format. It adds indentation and line breaks so developers can inspect objects, arrays, and nested data more easily.

Use this tool to beautify JSON responses from APIs, minify payloads, or validate syntax while debugging applications. Invalid JSON produces an error message to help you identify the issue.

How to use this JSON tool

Paste your JSON into the input editor or load the sample.
Choose Beautify, Minify, or Validate JSON.
Review the result and copy the output when needed.

JSON is processed locally in your browser by this page's formatting and validation functions; the input is not sent to a formatting API.