JSON Formatter & Validator

Format, validate, and beautify JSON data. Minify or pretty-print with customizable indentation — all processed locally in your browser.

Indent:

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Output

Free Online JSON Formatter and Validator

Format, beautify, and validate your JSON data online for free. Supports pretty-printing with customizable indentation, minification for production, and real-time validation with detailed error messages.

Perfect for developers, API testing, debugging, and data analysis. All processing happens in your browser — your data stays private.