JSON Formatter & Beautifier

Format, validate, and beautify your JSON data with syntax highlighting

Input JSON

Options

Indent Size:

Output

About JSON Formatter

JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. Our free JSON formatter tool helps you format, validate, and beautify your JSON data instantly.

Features

Format & Beautify: Transform minified JSON into readable, indented format
Syntax Highlighting: Color-coded output for keys, strings, numbers, and booleans
Validation: Instantly detect and locate JSON syntax errors
Minification: Compress JSON by removing whitespace
Privacy: All processing happens in your browser - your data never leaves your device

How to Use

Paste your JSON data into the input field
Click "Format JSON" to beautify or "Minify" to compress
Use "Validate" to check for syntax errors
Copy the formatted output with one click

Common JSON Errors

Unexpected token - Usually means missing quotes or invalid characters
Unexpected end of JSON - Missing closing brackets or braces
Invalid escape character - Backslashes need to be escaped as \\