Free Online JSON Formatter & Validator

Use our fast and easy JSON Formatter & Validator tool to clean, beautify, and validate your JSON code. It's fully online, free, and requires no installation.

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How to Use JSON Formatter

Paste your raw JSON in the input area.
Click on "Validate & Format" to beautify and verify your JSON.
Copy the formatted JSON or load an example to test.

Features

💡 Syntax Highlighting
✅ Real-time Validation
📋 Copy Input & Output
📚 Example JSON Loader
📏 Character Counter
🔒 100% Client-Side (no data sent to server)

Frequently Asked Questions (FAQ)

What is a JSON Formatter?

A JSON formatter is a tool that beautifies and structures JSON data for better readability and easier debugging.

Is this JSON Validator free to use?

Yes! This tool is completely free and doesn’t require registration or installation.

Is my data secure?

Absolutely. All processing is done locally in your browser. Your data never leaves your device.

Can I use this tool on mobile devices?

Yes, it's fully responsive and works across smartphones, tablets, and desktops.

Does it support nested JSON structures?

Yes, the formatter supports deeply nested JSON and highlights keys, values, booleans, null, and numbers.