JSON Formatter

Format, beautify, and validate JSON data. Minify JSON or pretty print with custom indentation.

Input JSON

Indent Size

Sort keys alphabetically

JSON Stats

Keys

Depth

Objects

Arrays

Minified

122B

Formatted

171B

Formatted JSON

{
  "name": "John",
  "age": 30,
  "city": "New York",
  "hobbies": [
    "reading",
    "gaming"
  ],
  "address": {
    "street": "123 Main St",
    "zip": "10001"
  }
}

Minified JSON

{"name":"John","age":30,"city":"New York","hobbies":["reading","gaming"],"address":{"street":"123 Main St","zip":"10001"}}

JSON Formatter Guide

This tool formats, validates, and minifies JSON so it is easier to read, debug, or send through an API. It is useful for developers, analysts, support teams, and anyone checking structured data.

How to Use It

Paste JSON into the input box.
Review any validation error and fix the line or character shown.
Use formatted output for reading and minified output for compact transfer.
Avoid pasting secrets, passwords, tokens, or private customer data into any browser tool unless you trust the environment.

Common JSON Errors

Using single quotes instead of double quotes for keys or strings.
Leaving a trailing comma after the final array or object item.
Forgetting to escape quotation marks inside a string.
Mixing comments into JSON. Standard JSON does not allow comments.

Worked Examples

Formatted for Reading

Problem:

A one-line API response is hard to scan.

Solution Steps:

1Paste the JSON
2Format it with indentation
3Expand objects and arrays visually

Result:

Nested fields become easier to inspect.

Minified for Transfer

Problem:

A configuration file has extra whitespace.

Solution Steps:

1Validate the JSON first
2Use the minified output
3Keep a readable copy for editing

Result:

The JSON becomes smaller without changing its data.

Tips & Best Practices

✓Validate before sending JSON to an API.
✓Keep a formatted version in source control when humans need to review it.
✓Never paste access tokens or private data into tools you do not control.

Frequently Asked Questions

No. Formatting changes whitespace only if the JSON is valid.

Standard JSON cannot. Some config formats allow comments, but strict JSON parsers reject them.

JSON requires object keys to be strings wrapped in double quotes.

It is valid, but formatted JSON is easier and safer for humans to edit.

Last updated: 2026-05-20

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Editorial Note

MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

ðŸ“š

Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.