No — formatting happens in your browser. Paste a production payload without a second thought.

What if the JSON is invalid?

It tells you the parse error. If you only want to check validity, use the JSON Validator, which never throws.

formatters · Integration Studio Tool

JSON Formatter

Pretty-print and indent JSON — in your browser, nothing uploaded.

Your data never leaves your browser

This tool runs entirely on your computer. What you paste or drop is never uploaded, never stored and never seen by us — close the tab and it's gone. How we know

Input

Output

Press Run to see the output. Sign up takes ten seconds — no credit card required.

Worked example

Input

{"a":1,"b":[2,3]}

Output

{
  "a": 1,
  "b": [
    2,
    3
  ]
}

This example is one of JSON Formatter's test cases — if the tool stopped producing this output, the build would fail.

Questions

Is my data uploaded?: No — formatting happens in your browser. Paste a production payload without a second thought.
What if the JSON is invalid?: It tells you the parse error. If you only want to check validity, use the JSON Validator, which never throws.

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