Free Online JSON Formatter & Beautifier
Paste raw or minified JSON to pretty-print it with proper indentation, or catch syntax errors before they break your build. Supports customizable indentation (2 or 4 spaces, tabs), collapsible tree view, and instant validation. Everything runs locally in your browser — nothing you paste is uploaded anywhere. Essential for debugging API responses, configuration files, and data payloads.
Frequently Asked Questions
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