Format, validate and minify JSON
Paste JSON to pretty-print it with clear indentation, check that it's valid, or minify it to a single compact line.
How to use the JSON Formatter tool
- 1Paste your JSON into the input box.
- 2Click Beautify to format it, or Minify to compress it.
- 3Copy the result or download it.
Good to know
- Your data is processed in your browser and never uploaded.
- Invalid JSON shows a clear error instead of a wrong result.
- Drop a .json file on the home page to open it here directly.
Frequently asked questions
How do I check if my JSON is valid?
Paste it and click Beautify. Valid JSON is formatted; invalid JSON shows an error explaining what's wrong.
Is it safe to paste API responses or config files?
Yes. Formatting runs entirely in your browser, so the data never reaches our servers.
What does minifying JSON do?
It removes all unnecessary spaces and line breaks, producing the smallest equivalent JSON.
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