JSON Formatter & Validator

What is a JSON Formatter?

A JSON Formatter (also called a JSON Beautifier) takes compact or minified JSON and adds proper indentation, line breaks, and spacing to make it human-readable. It also validates the JSON against the RFC 8259 specification, flagging syntax errors instantly.

How to use this JSON Formatter

• Paste your raw or minified JSON into the input box
• Click Format to pretty-print with 2-space indentation
• Switch to Tree tab to inspect nested arrays/objects quickly
• Use Minify to strip all whitespace for production
• Use Validate to check syntax without changing output
• Use Sort Keys to alphabetically sort all object keys

Example

Input: {"name":"Alice","age":28,"skills":["JS","Python"]}

Output: a clean, indented, multi-line JSON — perfect for debugging API responses.

Frequently Asked Questions