JSON tool
JSON Validator
Check JSON syntax and see a useful error location without sending your data to a server.
Your data is processed locally in your browser and is not sent to our server.
Result
Your result will appear here.
How to use JSON Validator
- Paste a JSON document.
- Select Validate to check its syntax and see an error line and column if invalid.
Example
{"valid":true,"items":[1,2,3]}Technical details
Validation uses the native browser JSON parser. Error offsets are converted to line and column positions.
Frequently asked questions
Does this validate a JSON schema?
No. It checks JSON syntax only, not a JSON Schema or application-specific rules.