JSON Formatter

Validate, prettify, and minify your JSON data.
Runs entirely in your browser for maximum privacy.

Input JSON

Output

Frequently Asked Questions

Yes. This tool runs 100% client-side in your browser. Your data is never sent to our servers.

Minifying removes all unnecessary whitespace and line breaks from the JSON, reducing file size for production use.

JSON requires strict syntax (e.g., double quotes around keys). Our tool validates this before formatting.

Yes, click the upload icon to load a .json or .txt file directly from your computer.