About JSON Format Tools
JSON Format Tools is a free collection of JSON tools built for developers who need fast, reliable, and private ways to work with JSON data. Every tool runs entirely in your browser — no servers, no accounts, no tracking.
What we offer
- JSON Formatter — beautify and pretty-print JSON
- JSON Validator — check JSON syntax with precise error messages
- JSON Minifier — compress JSON to save bandwidth
- JSON Beautifier — same as formatter, focused interface
- JSON Viewer — interactive collapsible tree view
- JSON Compare — diff two JSON objects
Privacy by design
We do not send your JSON to any server. All processing is done locally using browser JavaScript APIs. We do not log, store, or transmit your data. Your sensitive configuration files and API responses stay on your machine.
Open and honest
JSON Format Tools is a lightweight, statically-hosted website. There is no backend API, no database, no user accounts. It is intentionally simple so that it stays fast, cheap to host, and easy to audit.