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JSON Validator

Check whether a block of text is valid JSON. When it is not, the validator reports the error together with its line, column and character position.

JSON Validator

How to use the JSON Validator

  1. Paste the JSON you want to check.
  2. Press Validate.
  3. A green message means the JSON parses cleanly; a red message shows the first error and where it sits.
  4. Fix the spot named in the message and validate again.

About this tool

Most JSON errors are small: a trailing comma, a missing quote, a bracket closed in the wrong place. This validator uses a strict JSON parser and translates its complaint into a line, column and position you can jump straight to, instead of leaving you to hunt through the whole document.