Free developer tools

Format and validate JSON

Beautify messy JSON, minify it for production, or find the exact line and column of a syntax error. Your data stays in your browser.

Runs in your browser
Nothing is uploaded
Free, no sign-up

CtrlEnter formats

Input JSON

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Formatted output

// Your formatted JSON will appear here...
//
// Click "Format JSON" to beautify
// Click "Minify" to compress
// Click "Validate" to check for errors

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Lines

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Format and beautify

Instantly format messy JSON with proper indentation and line breaks. Makes JSON readable and easy to understand.

Validate JSON

Check if your JSON is valid with detailed error messages, including the line and column where the error occurs.

Minify JSON

Compress JSON by removing whitespace and line breaks. Perfect for reducing file size and network bandwidth.

About the JSON formatter

Our free JSON formatter and validator is the fastest way to format, beautify, and validate JSON data online. Whether you're working with API responses, configuration files, or database exports, this tool makes JSON readable and helps you catch errors instantly.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data format used extensively in web development and APIs. It's human-readable, easy to parse, and has become the standard for data exchange between servers and clients.

Features

Format JSON: beautify JSON with consistent two-space indentation.
Validate JSON: check syntax and find errors with detailed messages.
Minify JSON: remove whitespace to reduce file size.
Syntax highlighting: color-coded output for easy reading.
File upload: load JSON files directly from your computer.
Statistics: view character count, lines, size, and depth.
100% private: all processing happens in your browser.

Common use cases

Format API responses for debugging
Validate JSON configuration files
Pretty print JSON for documentation
Minify JSON to reduce file size
Check JSON syntax before deployment
Debug JSON parsing errors

Need to fetch JSON from websites and APIs? ScrapingBot returns any page as HTML or structured JSON, with JavaScript rendering, proxies and AI extraction built in. See the API docs.