Online YAML Schema Validator

The tool accepts YAML input and a schema in JSON Schema (or YAML) form. It parses YAML into an internal data model, handles anchors and references, and then validates values against schema constraints such as required fields, type checks, enums, patterns, and nested structures. The validation is schema-driven, so it enforces consistent configurations across deployment environments.
Outputs include a validity flag, a list of errors with exact paths, and optional normalized YAML. Each error includes path (dot or JSON Pointer), message, and optional line/column. This makes it easy to locate and fix issues in large configuration files.
Advanced features include multi-document YAML support, partial validation, and the ability to mix YAML with inline JSON Schema, enabling incremental validation in CI or IDEs. It is designed for developers, DevOps engineers, and platform teams who manage complex config files.
It handles common edge cases such as missing required fields, incorrect types, invalid patterns, and recursive references. Performance considerations include streaming parsing for large files and clear error reporting even in deeply nested structures.