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RapideTools

Validador JSON

Verifique se um JSON é 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.

Sua entrada é processada localmente no navegador — nada é enviado, armazenado ou registrado.

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Como 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 comuns

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

Perguntas frequentes

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.