JSON Formatter
Paste JSON and format (pretty-print), minify, or validate it instantly. Errors are reported with a clear message. It all runs in your browser, so your data is never uploaded. Free, no sign-up.
Paste JSON above, then Format or Minify.
Frequently asked questions
It re-indents (pretty-prints) JSON so it's easy to read, or minifies it to remove whitespace. It also validates the JSON and shows an error if the syntax is wrong.
No. The formatting and validation happen entirely in your browser with the built-in JSON parser, so nothing you paste is uploaded or stored.
Common causes are trailing commas, single quotes instead of double quotes, missing brackets, or unquoted keys. The tool points to the parse error so you can fix it.
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