JSON Formatter

Free online JSON formatter, validator, and viewer. Beautify, minify, and inspect your JSON data instantly in the browser.

Input JSON

Output

Format & Validate

Paste any JSON snippet and get instant formatting with syntax validation and clear error messages.

Minify & Compress

Remove all whitespace to create compact JSON ideal for APIs, storage, and network transfer.

Tree View

Navigate nested objects and arrays visually with an interactive tree representation.

What is a JSON Formatter?

A JSON formatter is an online tool that takes raw, minified, or unformatted JSON data and converts it into a clean, indented, human-readable structure. It helps developers debug APIs, inspect configuration files, and share data more easily.

This tool works entirely in your browser — your data never leaves your device. It supports formatting, validation, minification, and tree view for any valid JSON input.