A lightweight JavaScript library for validating data against JSON Schema Draft v4.
Tiny Validator (tv4) is a JavaScript library that validates data against JSON Schema Draft v4. It checks if JSON objects conform to specified schemas, ensuring correct data types, structures, and constraints. It solves the problem of programmatically verifying data integrity in applications and APIs.
JavaScript developers building applications or APIs that require robust data validation, especially those working with JSON data and needing compliance with JSON Schema standards.
Developers choose tv4 for its small footprint, full Draft v4 support, and extensibility through custom validators. It works consistently across browsers and Node.js without dependencies, making it a reliable, lightweight alternative to heavier validation libraries.
Tiny Validator for JSON Schema v4
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Implements the full JSON Schema Draft v4 specification, enabling detailed validation of data types, structures, and constraints as demonstrated in the demos.
Supports custom keywords and formats via defineKeyword and addFormat, allowing developers to add their own validation rules beyond the standard schema.
Offers validateMultiple for collecting all errors and validateResult for thread-safe operations, providing flexibility for different use cases.
Works in Node.js and browsers including IE >=7 with no external dependencies in core, making it versatile for various environments.
The README explicitly states the project is not actively maintained, meaning no bug fixes, security updates, or support for issues.
Only supports JSON Schema Draft v4, missing features and improvements from newer drafts, which limits its relevance for modern applications.
Asynchronous validation needs an extra jQuery-based file (tv4.async-jquery.js), adding bloat and restricting use in jQuery-free projects.