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JSON Formatter

Formatters & Beautifiers

Format, validate, and beautify JSON data instantly. Free, private — all processing in your browser.

Indent:Sort keys

Input JSON

Formatted Output

How to use

1. Enter or paste your data in the input area above
2. Adjust settings or options as needed
3. Click the action button or see real-time results
4. Copy the result with the copy button

All processing happens in your browser. Nothing is sent to any server.

About this tool

JSON (JavaScript Object Notation) is the most widely used data interchange format on the web. Our JSON Formatter takes your raw, minified, or messy JSON and transforms it into clean, properly indented, human-readable output. It validates your JSON syntax in real-time, showing exactly where errors occur with line and position numbers. Use it to debug API responses, format configuration files, or clean up JSON data before sharing with your team. The formatter supports customizable indentation (2 spaces, 4 spaces, or tabs), alphabetical key sorting for consistent output, and one-click minification to reduce file size. All processing happens entirely in your browser — your JSON data is never sent to any server, making it safe for sensitive API keys, tokens, and configuration data. Whether you are a frontend developer debugging fetch responses, a backend engineer formatting database exports, or a DevOps engineer working with JSON configuration files, this tool handles it all instantly.