JSON Formatter

Format and validate JSON data

Runs in your browser

Formatted JSON will appear here...

A JSON formatter helps you beautify, validate, and minify JSON data. JSON (JavaScript Object Notation) is a popular data interchange format used in web programming and APIs. This tool makes it easy to read, edit, and validate JSON structure.

Use cases

  • Format JSON from APIs for readability and debugging
  • Validate JSON syntax before use
  • Minify JSON to reduce file size
  • Beautify JSON for presentation or documentation

When to use?

Use this tool when working with JSON data, especially when debugging APIs, processing configurations, or need to check JSON validity. Very useful for developers, QA engineers, and anyone working with JSON data.

Examples

  1. Format minified JSON from an API

    Input

    {"name":"GetIt","tools":16,"tags":["free","no signup"]}

    Output

    { "name": "GetIt", "tools": 16, "tags": [ "free", "no signup" ] }

  2. Minify JSON before sending it

    Input

    { "id": 42, "active": true }

    Output

    {"id":42,"active":true}

Questions and answers

Why is my JSON invalid?

The most common causes are a comma after the last item, single quotes instead of double quotes, and comments. Standard JSON allows none of these.

Can I change the indentation?

Yes. Choose 2, 4 or 8 spaces and the output is formatted again immediately.

What is the tree view?

Tree view shows your JSON as a collapsible outline, so you can open only the parts you need. Raw view shows the formatted text, ready to copy.

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