JSON Data
JSON Schema (Optional)
JSON Validator
FAQ
Answers to common questions for this tool.
What does the validator check?
It checks JSON syntax and can validate against a schema.
How do I validate JSON?
Paste JSON into the input and click Validate.
What is JSON Schema?
A structured format that defines the expected shape of JSON data.
Can I validate without a schema?
Yes, syntax validation works without a schema.
Why do I see an error line/column?
The validator locates the first parsing error for quicker fixes.
Does it validate arrays?
Yes, any valid JSON value can be validated.
What if the schema is invalid?
You will see an error indicating the schema problem.
Is my data private?
Yes, all validation runs locally in your browser.
Can I copy the validation result?
Yes, you can copy output or error messages.
Does it change my JSON?
No, validation does not modify your input.