JSON Formatter
A fast JSON formatter and validator. Pretty-print, minify, or fix broken JSON in your browser.
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How to use JSON Formatter
- 1
Paste your JSON into the editor.
- 2
Click 'Format' to pretty-print, or 'Minify' to shrink.
- 3
Copy the result or download it as a .json file.
Why use JSON Formatter?
- Instant validation with clear error messages and line numbers.
- Configurable indent (2, 4, or tab).
- Works on JSON files of any size your browser can handle.
Common use cases
- Debug an API response.
- Reformat config files for readability.
- Shrink JSON before shipping it in production.
Your files never leave your device
Every tool on Xevon Tools runs 100% in your browser. No uploads, no servers, no tracking. Free forever.
About JSON Formatter
A JSON formatter is one of the most-used developer tools in the world — every API response, config file, and database export passes through one at some point. Xevon Tools' JSON Formatter validates your JSON, pretty-prints it with configurable indentation, minifies it for production, and shows clear errors when something is wrong. Because everything runs in your browser, even sensitive API responses stay completely private.