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RapideTools

Validador JSON

Comprueba si un JSON es válido.

Paste JSON to check whether it is valid. Errors show the message plus the line and column where parsing failed. Everything runs locally in your browser.

Tu entrada se procesa localmente en tu navegador — nada se sube, almacena ni registra.

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Cómo funciona

  1. 1 Paste or type your JSON.
  2. 2 The result updates live — valid or the error location.
  3. 3 Fix the reported line and column if needed.

Casos de uso comunes

  • Catch a stray comma or missing bracket.
  • Validate an API response.
  • Check config files before deploying.
  • Confirm JSON before importing it.

Preguntas frecuentes

Is my input sent to a server?

No. Everything runs locally in your browser — your input is never uploaded, stored or logged.

Does it show where the error is?

Yes — when the browser reports a position, the tool converts it to a line and column number.

What counts as valid?

Strict JSON: double-quoted keys, no trailing commas, no comments.

Is it really free?

Yes — free, with no signup and no limits.

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