JSON Formatter and Minifier

Format, minify, validate and sort keys of any JSON instantly.

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ℹ️ This tool is for informational purposes only. It does not replace professional advice.

The JSON formatter beautifies (pretty-print), minifies, validates and alphabetically sorts keys of any JSON. It detects syntax errors and shows exactly where the problem is. Useful for debugging APIs, reading compressed responses, preparing payloads or cleaning config files. Everything happens in your browser, your data never leaves your device. Use it as many times as you need: it is completely free, requires no sign-up and works directly in your browser.

Frequently asked questions

¿Qué hace 'ordenar claves'?
Reordena las claves de cada objeto alfabéticamente (A-Z). Útil para comparar dos JSONs que tienen el mismo contenido pero distinto orden.
¿El JSON se envía a algún servidor?
No. El parseo, formateo y validación se hacen con JavaScript nativo en tu navegador. Tu JSON nunca sale de tu ordenador.
¿Soporta JSON con comentarios o trailing commas?
No. El estándar JSON estricto (RFC 8259) no permite comentarios ni comas finales. Elimínalos antes de pegar el texto.
What does 'sort keys' do?
It reorders each object's keys alphabetically (A-Z). Useful for comparing two JSONs with the same content but different order.
Is the JSON sent to any server?
No. Parsing, formatting and validation are done with native JavaScript in your browser. Your JSON never leaves your computer.
Does it support JSON with comments or trailing commas?
No. The strict JSON standard (RFC 8259) does not allow comments or trailing commas. Remove them before pasting.

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