JSON Schema Validator — Validate Draft 7 Online
Check your JSON against a Draft 7 schema. Validate required fields, types, formats and constraints, with errors shown at their JSON paths.
Processed in your browser. Draft 7 only. Data is not coerced or changed. Remote references are not fetched; use local definitions.
Make the most of this tool
Paste a JSON document on the left and its schema on the right. Run validation to see all reported errors.
Syntax validation and schema validation are different: valid JSON can still contain the wrong fields or types.
Data is never coerced or changed. Remote references and asynchronous schemas are not supported; use local definitions.
Frequently Asked Questions
How is schema validation different from JSON syntax validation?
Syntax validation checks whether text is valid JSON. Schema validation checks the parsed value against rules for types, fields, formats, and constraints.
Which schemas are supported?
This validator supports JSON Schema Draft 7 with local definitions and supported formats. Remote references and asynchronous schemas are not loaded.
Does validation change my data?
No. Values are not coerced, defaults are not inserted, and extra fields are not removed. Validation reports matching results or field paths with errors.