Validador JSON online - Comprueba la sintaxis

Valida JSON al instante, encuentra errores de sintaxis y conserva tus datos en el navegador.

JSON para validar

How to validate JSON syntax

The validator uses the browser JSON parser and reports line and column details when available. Fix the first error and validate again; this is usually the fastest way to recover a valid document.

  1. Paste the JSON document.
  2. Select Validate and inspect the first error.
  3. Fix it and repeat until the document is valid.

Why does valid-looking JSON fail?

Common causes include trailing commas, single quotes, unescaped line breaks, and missing double quotes.

Does validation modify the input?

No. Validation only reads the input and reports the result.