Format, beautify, validate, and minify JSON data instantly. This utility helps structure your JSON objects client-side in your browser.
How to use it
- Paste your JSON into the input box.
- Click format to indent it, or minify to strip every space.
- Copy the result, or read the error if the JSON does not parse.
Frequently asked questions
Is my JSON sent to a server?
No. It is parsed by your browser, so API responses, tokens and customer data stay on your machine.
Why does my JSON not validate?
Nearly always a trailing comma, a single quote instead of a double one, or an unquoted key. JSON is stricter than JavaScript object syntax.
What does minifying achieve?
It removes every space and line break, which typically cuts the payload by twenty to thirty percent. Useful for config files you ship and for API request bodies.