JSON Formatter

Format, validate, and beautify your JSON data. Check for syntax errors instantly.

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JSON Syntax Guide

Data Types

String: "Hello World"
Number: 42, 3.14, -100
Boolean: true, false
Null: null
Array: [1, 2, 3]
Object: {"key": "value"}

Common Errors

Missing quotes around keys
Trailing commas in arrays/objects
Single quotes instead of double quotes
Unescaped special characters
Missing closing brackets

Tip: JSON keys must always be in double quotes. Single quotes are not valid JSON.

Sample JSON Examples

FAQs

JSON (JavaScript Object Notation) is a lightweight data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate.

Formatted JSON is easier to read and debug. It helps identify structure, missing brackets, and other errors quickly. Always format JSON before sharing or documentation.