What does a JSON formatter do?
A JSON formatter takes messy, minified, or one-line JSON and re-prints it with clean indentation so you can actually read it. It also validates the JSON — if there’s a missing comma or bracket, it tells you exactly where.
Everything runs in your browser. Your JSON is never uploaded, logged, or stored — safe for config files, API responses, and private data.
Format vs Minify — what’s the difference?
Format (beautify) adds line breaks and indentation to make JSON human-readable. Minify strips every space and line break to make the smallest possible file — what you ship to production to save bandwidth.
Frequently Asked Questions
Is my JSON data safe in this tool?
Yes. The formatting and validation happen entirely inside your browser using JavaScript’s native JSON engine. Nothing is sent to a server, logged, or saved — close the tab and it’s gone.
Why does it say my JSON is invalid?
Common causes are a trailing comma, single quotes instead of double quotes, a missing bracket, or unquoted keys. The error message shows the position so you can jump straight to the problem.
What’s the difference between format and minify?
Format adds indentation so JSON is easy to read; minify removes all whitespace so the file is as small as possible for production. Both keep the data identical.
Does formatting change my data?
No. It only changes the spacing and line breaks. The keys, values, and structure stay exactly the same — it’s the same JSON, just easier to read.
