JSON Validate Tools

JSON Schema Validator

Validate a JSON document against a JSON Schema, with draft selection and precise error locations.

document: {"age":36}

schema: age is integer

valid ✓

0 violations

JSON Validator

Validate and pretty-print JSON data, with clear error reporting.

{"name":"Ada","age":36}

{

"name": "Ada",

"age": 36

}

JSONL Validator & Formatter

Validate JSON Lines/NDJSON by parsing every nonblank line independently, report exact line/column parser errors and per-type record counts, then export compact JSONL or indented review output without cleaning parsed records.

{"id":1}

{"id":2}

2 records

types: object

valid ✓