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JSON Formatter & Validator

Paste JSON below. Format it for readability, minify it for transport, or validate it and get a clear error if something's wrong.

About JSON formatting

JSON (JavaScript Object Notation) is a lightweight data format used across almost every API and config file. This tool parses your JSON to confirm it's valid, then reprints it with consistent 2-space indentation so nested objects and arrays are easy to read. If the JSON is invalid, you'll see exactly what the parser found wrong.

Is my JSON sent to a server?
No. Parsing and formatting both happen locally in your browser using the standard JSON parser — nothing you paste leaves your device.
What's the difference between Format and Minify?
Format adds indentation and line breaks for readability. Minify strips all unnecessary whitespace to produce the smallest possible output, useful for sending over a network.

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