SuperB PowerTools

JSON Validator

Check whether a block of JSON is syntactically valid.

or drag a file here
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How to use

  1. 1Paste JSON into the input, or upload a .json file.
  2. 2Click Validate.
  3. 3If the JSON is invalid, the exact line and column of the problem are shown when available.

Frequently asked questions

Does this fix invalid JSON for me?

No — it tells you the JSON is invalid, why, and where, but won't guess your intended fix.

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