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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.
How to use the JSON Validator
- Paste the JSON you want to check.
- Press Validate.
- A green message means the JSON parses cleanly; a red message shows the first error and where it sits.
- 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.