Free JSON Formatter & Validator - Pretty Print
Format and beautify JSON data with proper indentation. Validate JSON syntax.
Input
JSONOutput
Formatted JSONYour converted output will appear here
How to Use Free JSON Formatter & Validator - Pretty Print
The formatter parses your JSON using JSON.parse() to validate syntax, then uses JSON.stringify() with indentation to create a beautified output.
🔒 Privacy First: This tool runs entirely in your browser. Your data never leaves your computer.
Common Use Cases
- Format API responses for debugging
- Beautify configuration files
- Validate JSON syntax before deployment
- Make JSON readable in documentation
Free JSON Formatter & Validator - Pretty Print FAQ
Paste your minified or messy JSON into the input field. The formatter will automatically beautify it with proper indentation and validate the syntax.
The formatter validates JSON and shows specific error messages for syntax issues, but cannot automatically fix malformed JSON.
You can choose between 2 spaces, 4 spaces, or tab indentation.
Yes! Toggle between beautified and minified modes to compress your JSON.