JSON Formatter

Validate, format, and minify JSON entirely in your browser.

Valid JSON

86 chars · 8 lines

Overview

What is JSON Formatter?

A JSON formatter is an essential tool for developers working with APIs and data structures. It takes raw, minified, or disorganized JSON data and converts it into a clean, human-readable format with proper indentation and syntax highlighting. Our online JSON formater runs entirely in your browser, ensuring your data never leaves your computer.

Use cases

When to use JSON Formatter?

Debugging API responses by making them readable

Validating JSON syntax to catch missing commas or quotes

Minifying JSON payloads to reduce file size before transmission

Cleaning up JSON logs copied from terminal windows

Learn the concept

Guides for JSON Formatter

How to Format JSON Without Breaking It

Learn how to pretty-print, validate, and minify JSON safely, with examples of common syntax mistakes and a formatter you can use immediately.

JSON vs YAML: When to Use Each Format

A practical comparison of JSON and YAML for APIs, configs, and developer workflows, including examples and conversion tips.

Invalid JSON Examples and How to Fix Them

See the most common invalid JSON patterns, why parsers reject them, and how to repair payloads quickly.