Free Online WSDL Validator

Purpose & User Intent: This tool validates WSDL (Web Services Description Language) documents to ensure structural correctness, schema conformance, and usable service definitions. Primary users are SOAP service developers, QA engineers, integrators, and API catalog teams who publish or consume web services. It is used when a WSDL URL or XML content is available and correctness without running a live service is required. Core Logic & Features: The validator parses WSDL 1.1/2.0 and related XML schemas, resolves imports where possible, and checks definitions, types, messages, portTypes, bindings, and service endpoints. Optional/advanced features include schema type validation, import resolution rules, and report granularity levels. Inputs & Outputs: Inputs include a WSDL URL or raw WSDL XML, and an optional base URL for import resolution. Outputs provide a structured report with validity status, error/warning lists, and a summary of operations, bindings, and endpoints. Results can be exported as JSON, XML, or human-readable text. Algorithms & Calculations: The tool uses XML Schema validation against WSDL schemas, followed by semantic checks for portType/Bingding operation compatibility, and standard SOAP binding rules. It applies a hierarchical validation pass: syntax, schema, then semantic conformance. It flags inconsistencies and missing references with precise locations. Error & Edge Cases: Handles network timeouts, unreadable documents, and partially valid imports by reporting unresolved imports and suggesting base URL corrections. It accommodates WSDL variants and reports version incompatibilities, missing operation definitions, and namespace conflicts without masking critical errors. Industry/Region & Localization: Adheres to WSDL 1.1/2.0 standards; uses XML namespaces and ISO time formats where applicable. Localization is limited to language in the generated report; currency or region-specific data is not applicable. Assumptions & Exclusions: Assumes inputs are intended to describe SOAP services; does not execute services, perform runtime testing, or validate non-WSDL artifacts. Excludes UI guidance, only focuses on schema, structure, and conformance checks.