Free online JSON formatter, validator, and converter. Format, minify, and validate JSON data. Convert between JSON and YAML formats. Perfect for API development, configuration files, and data processing. All processing happens locally in browser, completely secure and private.
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Privacy & Security
All JSON processing is performed locally in your browser using JavaScript's native JSON parser and the js-yaml library. No data is transmitted to any server. Your JSON data stays completely private and never leaves your device.
Tips & Shortcuts
- •Use swap button to quickly convert back and forth
- •Minify JSON before sending over network to reduce bandwidth
- •YAML is more human-readable, great for configuration files
- •Validate JSON before using in your code to catch errors early