Format & Validate JSON Instantly
Free online JSON formatter, validator, and minifier. Works in your browser — no data leaves your device.
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About JSON Formatter
Our free JSON formatter tool helps you format, validate, and minify JSON data instantly. Perfect for developers, API testers, and data analysts who need to work with JSON data.
Features:
- Format JSON with custom indentation (2 spaces, 4 spaces, or tabs)
- Minify JSON to reduce size
- Validate JSON with detailed error messages
- Error location with line and column numbers
- JSON statistics: keys, items, depth, and size
- Copy formatted output with one click
- Works entirely in your browser — no data sent to servers
- Completely free with no signup required