JSON Formatter & Validator
JSON Formatter beautifies messy JSON with proper indentation, minifies it to a single line, and validates it with clear error messages — all in your browser.
Última actualización: July 2026
Format, beautify, minify and validate JSON instantly. Free, private, in-browser JSON formatter with clear error messages.
🔒 Parsing and formatting happen in your browser — your JSON is never uploaded.
Cómo usar JSON Formatter & Validator
- Paste your JSON.
- Click “Format” to beautify or “Minify” to compact.
- Copy the result; errors are shown if the JSON is invalid.
Preguntas frecuentes
Does it validate my JSON?
Yes. Invalid JSON produces a clear error message pointing to the problem.
Can it minify JSON too?
Yes — one click compacts your JSON to a single line with no whitespace.
Is my JSON uploaded?
No. Parsing and formatting are done locally in your browser.
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