JSON Formatter
Format, validate and minify JSON with clear error messages.
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How it works
- 1
Paste your JSON
Paste raw or minified JSON into the input box.
- 2
Format instantly
It is re-indented with 2-space indentation as you type — no button to click.
- 3
Fix errors
If the JSON is invalid, the exact parser error message is shown so you can find and fix the problem.
- 4
Copy the result
Copy the formatted JSON, ready to paste back into your code or config file.
FAQ
- Why does it say my JSON is invalid?
- The formatter shows the exact error reported by the parser (e.g. an unexpected token and its position) so you can find and fix the problem.
- Does this tool send my JSON to a server?
- No — parsing and formatting happen entirely in your browser via JSON.parse, nothing is uploaded.
