JSON Formatter & Validator

Paste JSON to pretty-print it, minify it, sort its keys or find exactly where it is invalid. Your data never leaves your browser.

Runs in your browser. Your files never leave your device.

Your JSON

Indent

Everything stays in your browser. Your data is never sent anywhere.

How it works

Is my data sent anywhere?

No. Everything runs in your browser.

Is my file uploaded to a server?

No. Everything happens inside your browser on your own device. Your files are never sent to us or anyone else.

Is it free?

Yes. It is free to use, with no signup, no watermark and no daily limit.