Is JSON Formatter free?

Yes, JSON Formatter is completely free to use with no signup required.

Does JSON Formatter send my data to a server?

No. JSON Formatter runs entirely in your browser using client-side JavaScript. Your data never leaves your device.

Instantly format, validate, and minify JSON in your browser. No uploads. No signup. Works offline.

DevTab

Never leaves your browser

Format, minify, and validate JSON in real time with line-level error highlighting.

Input

Formatted output

Valid JSON105 B6 lines