JSON Validator
Paste your JSON and instantly find out whether it's valid — and if it isn't, exactly what's broken, without digging through a wall of minified text.
Input
Catch JSON errors before they break your app
A single misplaced comma or missing quote can make an entire JSON payload fail to parse. This validator runs your JSON through a strict parser and surfaces the exact error message immediately — the same information a browser console would give you, but without opening developer tools.
Frequently asked questions
How is this different from the JSON Formatter tool?+
Both use the same validation engine. This page is framed around quickly checking validity; the JSON Formatter page also offers pretty-printing and minifying once your JSON is confirmed valid.