Format, validate, and beautify JSON instantly with syntax error highlighting
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Formatted JSON will appear here...
Prettify messy JSON with customizable indentation (2, 4, or 8 spaces)
Instantly detect JSON syntax errors with detailed error messages
Compress JSON by removing whitespace and reducing file size
Our JSON Formatter is a powerful online tool for developers to format, validate, and beautify JSON data instantly. Whether you need to prettify messy API responses, validate JSON syntax, or minify JSON for production, this tool handles it all.
Key features: Real-time validation with error highlighting, customizable indentation (2, 4, or 8 spaces), minify mode to compress JSON, character and line count, and percentage reduction metrics. Perfect for debugging API responses, cleaning up configuration files, or preparing JSON for production deployment.
How to use: Simply paste your JSON into the input area. The tool automatically validates and formats your JSON in real-time. Switch between Format and Minify modes, adjust indentation, and copy the output with one click. No signup required, completely free!