WSDL Formatter & Beautifier - Format WSDL Online | SmartJson
Format and beautify WSDL files online instantly. 100% client-side processing. Free WSDL formatter and validator.
Key Features
- ✅ WSDL document formatting
- ✅ Service definition beautification
- ✅ Namespace preservation
- ✅ Whitespace management
How to Use
- Paste or upload your WSDL file
- Click the Format button
- Review the beautified output, including the embedded <types> schema section
- Use for documentation or as a readable reference alongside client code generation
Expert FAQ
- WSDL files often have many more namespace declarations than a typical SOAP message — does formatting handle that cleanly?
Yes — a WSDL commonly declares a target namespace plus separate namespaces for its embedded XML Schema type definitions, SOAP binding, and HTTP binding sections, sometimes five or more prefixes in the root <definitions> element alone. The formatter re-indents the full document while keeping every declared prefix and its binding visible at the element where it's declared, which matters for actually tracing which types and operations belong to which namespace in an unfamiliar service contract. - Does it reformat the embedded XML Schema (<types>) section the same way as the rest of the WSDL?
Yes — the <types> block containing inline XSD type definitions is XML like the rest of the document and gets the same consistent re-indentation, rather than being left as an unformatted island inside an otherwise-clean document, which is a common shortcoming of naive line-based WSDL formatters that don't recurse into nested schema blocks. - Will formatting break references between <message>, <portType>, <binding>, and <service> elements?
No — those are QName references (e.g. a binding's type="tns:SomePortType") expressed as attribute values, and attribute values are never altered by formatting, only inter-tag whitespace. The four-part WSDL structure (abstract message/portType definitions, concrete binding, and service endpoint) stays fully intact and cross-referenceable after formatting. - Is this a substitute for a real WSDL-to-client-code generator?
No — this formats and beautifies an existing WSDL for human readability; it doesn't generate client stubs or validate the WSDL against the SOAP/WSDL specification's structural rules. For code generation, tools like wsimport, svcutil, or your language's SOAP toolkit are the appropriate next step, using this formatter's output to make the source WSDL easier to read while you work with those tools.
Technical Details
WSDL is XML, but structurally denser than a typical document: a single <definitions> root routinely declares five or more namespace prefixes at once — the service's own target namespace, the embedded XML Schema namespace for the <types> section, SOAP binding and HTTP binding namespaces, and sometimes WS-* extension namespaces — and correctly re-indenting all of that while keeping every prefix legible at its declaration point matters more here than for a simpler document. The formatter handles this the same safe way the general XML Formatter does: a genuine parse first, then re-serialization with consistent indentation, so a malformed WSDL surfaces as a specific parse error rather than a best-effort garbled attempt. A WSDL's <types> section commonly embeds an entire inline XML Schema (XSD) defining the service's data types — this nested schema block gets the same consistent formatting treatment as the rest of the document, rather than being left as an unformatted island, which is a real shortcoming of naive line-based formatters that don't recurse into embedded schema content. WSDL's four-layer structure — abstract <message> definitions, <portType> operations built from those messages, concrete <binding> elements tying a portType to a specific protocol (SOAP, HTTP), and <service> elements exposing a binding at an endpoint address — is held together entirely by QName attribute references (type="tns:SomePortType" and similar). Formatting only touches inter-tag whitespace, never attribute values, so every cross-reference between these layers survives formatting completely intact. This tool improves readability of an existing WSDL; it isn't a substitute for a schema-aware client-code generator (wsimport, svcutil, or your platform's SOAP toolkit) or a full WSDL-spec structural validator — pair it with the SOAP Formatter when working through actual request/response messages for a service described by the WSDL.