Format, validate, minify JSON data fully inside your browser, no data upload to server
This free JSON formatter tool works completely client-side. All data processing runs in your local browser, we never store or send your JSON content to any remote server. It supports standard JSON syntax checking, auto indent formatting, whitespace compression for API debugging, developer testing and data analysis.
Common use cases: Debug API response JSON, clean messy copied JSON text, shrink JSON for network transmission, verify JSON syntax without installing desktop software. No registration, no hidden fees, 100% free for all users worldwide.