JSON Formatter & Validator
NewFormat, validate, and minify JSON with syntax highlighting.
A JSON formatter and validator is an indispensable tool for developers working with APIs, configuration files, and data pipelines. Raw JSON from an API response or database dump is often minified, stripped of whitespace and newlines, making it nearly impossible to read or debug.
This free online JSON formatter instantly pretty-prints your JSON with 2-space indentation, clearly showing nested objects and arrays at a glance. It also validates your JSON syntax in real time, catching missing commas, unmatched brackets, or invalid strings before they cause bugs in production.
You can also minify JSON to reduce payload size for API responses. All formatting and validation runs entirely in your browser using the native JSON.parse and JSON.stringify functions. Your data never leaves your device.
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