JSON validator
Check whether JSON is valid and see exactly where an error is, with the line, column and a preview of the problem.
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Questions
What does the validator check?
It parses your JSON with the same rules browsers and servers use, and reports the first error it finds.
Is it free?
Yes. This tool is free to use, with no sign-up.
Is what I type stored?
No. Everything happens in your browser and nothing is sent to our servers.