JSON Validator and JSON Schema Validator both validate JSON, but at different levels. JSON Validator checks for syntax errors (is this valid JSON?), while JSON Schema Validator checks structural compliance (does this JSON match my expected format?).
| Feature | JSON Validator | JSON Schema Validator |
|---|---|---|
| Validation level | Syntax only (RFC 8259) | Structure + types + rules |
| Requires schema | No | Yes (JSON Schema) |
| Checks | Commas, brackets, quotes, escaping | Types, required fields, ranges, patterns |
| Error detail | Line and character position | Path to failing field + rule |
| Use case | Is this valid JSON? | Does this match my API spec? |
| Speed | Instant | Depends on schema complexity |
Use JSON Validator when you need to quickly check if JSON is syntactically correct — debugging an API response, checking a pasted JSON snippet, or finding typos in a config file.
Use JSON Schema Validator when you need to verify that JSON conforms to a specific structure — validating API request/response payloads, checking form data against requirements, or ensuring config files have the right fields and types.
Yes. First validate syntax with JSON Validator to ensure the JSON is parseable, then validate structure with JSON Schema Validator to ensure it matches your expected format.
JSON Schema is a standard for describing the structure and constraints of JSON data. It defines required fields, data types, value ranges, and pattern matching rules.