Check whether JSON is valid and find the exact line and column of any syntax error.
Validate JSON against the standard (RFC 8259). Errors are explained in plain language with the position, plus hints for common mistakes like trailing commas.
{"id": 1, "tags": ["a", "b",]} is invalid: the comma after "b" is a trailing comma. Remove it and the JSON validates.
No — it checks that the JSON is well-formed. Schema validation checks the structure against rules you define.
No. JSON is stricter: keys must be in double quotes, strings use double quotes, and trailing commas, comments, undefined and functions aren’t allowed.
No — it checks that the text is well-formed JSON. Schema validation (required fields, types) is a separate step.