Free JSON Formatter in Your Browser
Beautify or minify JSON locally. Your data is not sent to a server. 100% client-side processing in your browser. Absolute privacy with zero file uploads — files never leave this device.
JSON formatter pretty-prints or minifies JSON in this tab. Invalid JSON shows an error instead of a broken result.
Do not paste secrets you would not want on screen. The text is not uploaded, but it is visible in this browser.
Questions
Does formatting change the data?
Pretty print and minify change whitespace only. Keys and values stay the same.
Is the JSON sent to a server?
No. Parsing runs locally.