JSON Schema Validator
Validate JSON against a schema — types, required fields, enums, patterns, and ranges.
Runs locally in your browser. Your input is not uploaded.
How to Use
- 1
Paste the schema
Into the Schema option — type/required/properties etc.
- 2
Paste the document
The JSON to validate goes in the main input.
- 3
Read the violations
Each error shows its path and the failed constraint.
Frequently Asked Questions
- The practical core: type, properties, required, items, enum, minimum/maximum, minLength/maxLength, pattern, minItems/maxItems, and additionalProperties — enough to validate typical API payloads and config files.
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