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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