Validate JSON Payloads Against JSON Schema Specifications
Validate JSON data payloads against JSON Schema specifications online. Test required properties, data type constraints, array items, and object schemas with detailed error location reports directly in your browser. Need to generate a schema contract from sample JSON data first? Use our JSON Schema Generator or JSON to JSON Schema Converter. Want to visualize your schema nodes interactively? Use JSON Schema Viewer. Or convert JSON to strong types with JSON to TypeScript.
How to Validate JSON Data Online
- Input JSON Schema Definition: Paste your JSON Schema schema into the left editor pane.
- Paste Target JSON Payload: Enter the JSON payload instance you wish to validate on the right.
- Run Validation Engine: Click Validate JSON Data to check schema compliance.
- Review Diagnostics: Inspect exact JSONPath line errors and type mismatch reports.
Key Features & Capabilities
- Multi-Draft Compatibility: Supports JSON Schema Draft-04, Draft-07, and 2020-12 property specifications.
- Detailed Property Violation Reporting: Flags missing required properties, invalid data types, and pattern mismatches.
- Interactive Error Path Tracing: pinpoints exact JSON keys (e.g.
$.users[0].email) causing validation errors. - One-Click Sample Schema Loading: Pre-loads valid JSON and schema templates for quick testing.
- Private Browser Processing: Your JSON payload is processed locally in your browser and isn't uploaded to TinyTools for validation.
Related JSON Schema Tools
- JSON Schema Generator – Automatically infer JSON schemas from JSON samples.
- JSON Schema Viewer – Visualize JSON schema structures interactively.
- JSON to JSON Schema – Convert raw JSON payloads to JSON Schema definitions.
- JSON Formatter & Validator – Prettify and repair raw JSON text.