Developer Tools
JSON Validator
Validate JSON and show parse errors clearly.
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JSON
Validation
Status
Waiting
Paste JSON to validate.
About this tool
The validator is JSON.parse with a readable error message. Empty input is waiting, not invalid.
How to use
- Paste JSON.
- Read Valid or Invalid and the parser message.
Formula and methodology
A thrown SyntaxError message is shown unchanged.
Worked example
A missing quote reports Unexpected token or Unexpected end of JSON input, depending on the browser.
Frequently asked questions
Is this a schema validator?+
No. It only checks that the text is JSON, not that it matches a schema.
Is data uploaded?+
No.
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