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JSON Formatter & Validator

Format, validate, and analyze JSON data with ease.

JSON Input

Indent Size

Sort Keys Alphabetically Compact Mode (No Whitespace)

Formatted JSON

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Format your JSON to see the results here.

JSON Tips & Information

Common JSON Errors:

Missing or extra commas between elements
Using single quotes instead of double quotes
Trailing commas in arrays or objects
Unquoted property names
Using comments (JSON doesn't support comments)
Using undefined, NaN, or Infinity (not valid in JSON)

JSON Data Types:

string: Text in double quotes
number: Integer or floating point
boolean: true or false
null: null value
object: Collection of key/value pairs
array: Ordered list of values

JSON Example:

{ "name": "John Doe", "age": 30, "isEmployed": true, "address": { "street": "123 Main St", "city": "Anytown", "zipCode": "12345" }, "phoneNumbers": [ "555-1234", "555-5678" ], "spouse": null }

When to Use JSON:

API responses and requests
Configuration files
Data storage for simple applications
Data exchange between different programming languages
Browser storage (localStorage, sessionStorage)

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