Paste messy JSON and I'll beautify, minify or validate it in a click — with clear error messages that point to the exact line.
JSON is everywhere — API responses, config files, exports and webhooks — and a single missing comma or bracket can break your whole app. A good formatter makes cluttered, minified JSON readable in seconds, while the validator catches syntax errors and tells you the exact line and column so you can fix them fast.
Developers use it to pretty-print API responses, debug malformed payloads, tidy up config files, and minify JSON before shipping it. Students and analysts use it to make sense of raw data exports. Because it runs privately in your browser, it's safe even for sensitive tokens, keys or customer data.
Is my JSON uploaded to a server?
No. Everything happens inside your browser, so your JSON is never uploaded — completely private, even for sensitive data.
What does Validate check?
It parses your text as strict JSON. If it's valid you get a green tick; if not, you get the parser's error message plus the approximate line and column of the problem.
Does it work on mobile?
Yes — it works on any modern phone or computer browser, and can be installed as an app for offline use.