Formateador JSON
Formatea, embellece y valida JSON al instante.
Paste your JSON below to format, validate and beautify it. Everything runs in your browser, so your data never leaves your device.
Cómo funciona
- 1 Paste or type your JSON into the input box.
- 2 Click Format to beautify and validate it.
- 3 Copy the formatted output, or minify it in one click.
Casos de uso comunes
- Beautify minified API responses so they are readable.
- Validate JSON and locate syntax errors before shipping.
- Clean up config files and payloads for code review.
- Minify JSON to reduce request and storage size.
Preguntas frecuentes
Is my JSON sent to a server?
No. Formatting and validation happen entirely in your browser. Your data is never uploaded.
What does “minify” do?
Minify removes all unnecessary whitespace to produce the smallest valid JSON, useful for reducing payload size.
Why is my JSON invalid?
Common causes are trailing commas, single quotes instead of double quotes, or unquoted keys. The error message points to the location.