JSON Schema Validator
Validate JSON documents against JSON Schema definitions (Draft-07, 2020-12) with detailed error reports.
How It Works & Processing Standards
Validate JSON documents against JSON Schema definitions (Draft-07, 2020-12) with detailed error reports.
Your input data is never sent to any server and is securely processed on your device.
Current Limits
- Desktop max file size: 50MB
- Mobile max file size: 20MB
JSON Schema Validator is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.
How to Use JSON Schema Validator
- 1Enter Schema & DataPaste JSON Schema definition and the JSON payload to validate.
- 2ValidateRun full schema compliance checks against required fields and constraints.
- 3Review ResultsInspect validation status and line-specific error diagnostics.
Examples
Validation Error Check
Input: Schema: requires "email" as format "email"
Data: {"email": "not-an-email"}
Result: Validation Failed: /email must match format "email"
Common Use Cases
- Testing API request bodies against OpenAPI schemas prior to deployment
- Verifying configuration file compliance against corporate standards
- Debugging Ajv or jsonschema validation errors in development
Frequently Asked Questions (FAQ)
Does this support custom formats like date-time, uri, and uuid?
Yes, standard string formats including email, date-time, uri, uuid, and ipv4/ipv6 are validated.