JSON Schema Validator
Validate JSON payloads against JSON Schema specifications.
Runs entirely in your browser — your data is never uploaded to any server.
How it works
- Paste JSON & SchemaInput data and schema
- ValidateExecutes Draft-07 validator
- Review reportPass or fail errors
What this tool does
- Draft-07 schema validation
- Detailed error line reporting
- 100% private in browser
Frequently Asked Questions
No. Validation runs in WebAssembly.
Privacy and security
Your input is processed by JavaScript running inside your browser. Nothing you paste is sent over the network, logged, or stored — which is what makes this safe to use with production data. If you want to check this yourself: open your browser’s developer tools, switch to the Network tab, and use the tool — you will see no request carrying your file or input leave the page.