JSON Formatter & Validator
Formatea, minifica y valida JSON al instante
Cómo funciona
- 1Pega tu JSON
Suelta cualquier JSON en el input - hasta el más messy o minificado funciona.
- 2Elige formato o minify
Pretty-print con 2 o 4 espacios, o colapsa a una línea para embeber.
- 3Copia o descarga
Copia el JSON formateado al portapapeles o descárgalo como .json.
Sobre JSON Formatter & Validator
JSON formatter, beautifier y validator gratis online. Pega cualquier JSON y obtén al instante un output pretty-printed con indent de 2 o 4 espacios, minifícalo a una sola línea o detecta errores de sintaxis. Corre entero en tu browser - tus datos nunca salen de tu dispositivo. JSON Formatter & Validator en 712 Tools corre entero dentro de tu browser con APIs nativas de JavaScript - ningún server ve tus datos. Eso significa resultados al instante, privacidad total y sin límites de upload.
Ya sea para una sesión de debug, una comprobación rápida o un incidente en producción, esta herramienta es gratis y sin límite de usos. Sin watermarks, sin sign-up y sin ads dentro de la herramienta.
Preguntas frecuentes
¿Se sube mi JSON a algún server?
No. Todo el parsing y el formateo pasan en tu browser con el JSON parser nativo. Cero requests al backend.
¿Qué detecta el validator?
Comas faltantes, keys sin comillas, trailing commas, brackets desemparejados y cualquier JSON inválido según RFC 8259.
¿Aguanta archivos grandes?
Sí, hasta lo que aguante la memoria del browser. Files de más de ~50 MB pueden ralentizar el pretty-print, pero la validación sigue rápida.
¿Soporta JSON5 o JSONC?
Aún no. Solo JSON estricto (sin comments, sin trailing commas, keys entre comillas dobles).
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