JSON Schema Validator
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About This Tool
Free, private, serverless JSON schema validator. Validate JSON data against JSON Schema Draft-07. Supports type checking, required fields, string/number constraints, enum, const, nested objects, arrays, pattern matching, and format validation (email, URI). Detailed error paths. No data leaves your browser — 100% client-side.
How to Use
- Paste your JSON data in the left panel
- Paste your JSON Schema in the right panel
- Click Validate to check conformance
- Review detailed error messages with exact paths
Frequently Asked Questions
Which JSON Schema draft is supported?
The validator supports most features of JSON Schema Draft-07, including type, required, properties, enum, const, minimum/maximum, minLength/maxLength, pattern, format, items, and additionalProperties.
What format validations are supported?
Email and URI format validation is built in. The validator checks strings against common patterns for these formats.
Can I validate nested objects?
Yes, the validator recursively validates nested objects and arrays, providing exact property paths in error messages.
What are the use cases?
API request/response validation, configuration file validation, data modeling, form validation rules, database schema verification, and CI/CD pipeline data checks.
Guides & Tutorials
In-depth guides for every tool. Learn how to process your data privately, for free, right in your browser.
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