JSON Formatter & Validator

Paste messy or minified JSON and get it cleanly formatted — or minify it back to one line. It also validates and shows you exactly where the error is. Everything runs in your browser; nothing is uploaded.

What it does

• Format / Beautify — indents nested objects and arrays so JSON is readable.
• Minify — strips whitespace to the smallest valid one-line form (for configs/APIs).
• Validate — if the JSON is invalid, you get the parser's error message to fix it.

Privacy: parsing happens locally with the browser's native JSON engine — your data never leaves your device.

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