Is the JSON Formatter free to use?

Yes, our JSON Formatter is completely free with no usage limits. No signup or registration is required — just paste your JSON and format it instantly.

Is my JSON data safe when formatting online?

Absolutely. All JSON processing happens entirely in your browser using JavaScript. Your data is never uploaded to any server, ensuring complete privacy and security.

What is the maximum JSON file size I can format?

There is no strict file size limit since processing happens in your browser. However, very large files (over 10MB) may cause slower performance depending on your device.

Formateur JSON

Formatez, validez et embellissez vos données JSON en ligne gratuitement.

Entrée

Comment utiliser

Formatez, validez et embellissez vos données JSON en ligne gratuitement.

1Paste your JSON data into the input field.
2Click 'Format' to beautify or 'Minify' to compress.
3View validation errors highlighted in real-time.
4Copy the formatted result with one click.

Fonctionnalités

Syntax highlighting with error detection
Format and minify JSON with one click
Handles nested objects and large files
Privacy-safe — never uploads your data

Questions fréquentes

En savoir plus

How to Format JSON Online — Complete Guide