JSON Formatter & Beautifier
Format, validate, and beautify JSON data instantly. Clean up messy JSON with proper indentation.
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Input JSON
1
Formatted Output
1
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Features
Instant Formatting
Format and beautify JSON data in milliseconds
Validation
Automatically detects and reports JSON syntax errors
Private & Secure
All processing happens in your browser - no data sent to servers
About JSON Formatter & Beautifier
Our JSON Formatter is a free online tool that helps you format, beautify, and validate JSON data instantly. Whether you're a developer debugging API responses or working with configuration files, this tool makes JSON readable and properly structured.
Key features include: Instant formatting with customizable indentation, JSON minification for production use, syntax validation with error reporting, alphabetical key sorting, and one-click copy/download functionality.
All processing is done locally in your browser, ensuring your data remains private and secure. No server uploads, no tracking, no data storage.
How to Use
- Paste your JSON data into the input field or upload a .json file
- Click "Format" to beautify or "Minify" to compress the JSON
- Adjust settings like indent size and key sorting if needed
- Copy the formatted output or download it as a file
- Use "Validate" to check if your JSON syntax is correct