An XML Schema Generator analyzes the structure of a sample XML document and produces an XSD (XML Schema Definition) that describes it. The XSD specifies element names, nesting rules, data types, and whether elements are required or optional. Use the generated schema to validate XML documents, generate code bindings, or document your data format.
Input XML
Generated XSD Schema
How to Generate an XSD Schema from XML
The XML schema generator analyzes the element hierarchy, attributes, and text content of your XML to produce an XSD file that formally describes the document's structure. The tool infers data types automatically — integer, decimal, boolean, date, dateTime, or string — based on the text content of each leaf element.
Step 1: Paste Your XML
Paste a representative XML document into the input area. For best results, include examples of all element variations — including optional elements, repeated elements, and elements with different data types. The tool parses the XML with the browser's built-in DOMParser API, so the input must be well-formed XML (properly nested, all tags closed).
Step 2: Configure Options
Enter a target namespace if your schema needs to declare a namespace URI (common in enterprise data exchange). Check Add annotations to include xs:annotation documentation elements for each type. elementFormDefault="qualified" requires all elements in instance documents to be namespace-qualified — leave it checked for most modern XML schemas.
Step 3: Generate and Refine
Click Generate XSD. The tool builds a xs:complexType for each element with child elements, infers types for text-only leaf elements, marks elements with minOccurs="0" when they appear in some but not all sibling groups, and sets maxOccurs="unbounded" for repeated elements. Copy the XSD or download it as a .xsd file to use in your XML validator or IDE.
FAQ
Is this XML schema generator free?
Yes, the XML schema generator is completely free with no account required. Generate XSD schemas from XML instantly with no limits.
Is my XML data private?
Yes. All schema generation happens entirely in your browser using the built-in DOMParser API. Your XML is never sent to any server.
What is an XSD schema?
An XSD (XML Schema Definition) file defines the structure, data types, and constraints that a valid XML document must follow. It specifies which elements and attributes are required or optional, their data types (string, integer, date, boolean, etc.), and how elements are nested. XSD files are used by validators, parsers, and data exchange systems to ensure XML data conforms to an expected format.
How does the type inference work?
The generator analyzes the text content of each leaf element and applies rules to infer the XSD type: pure integers become xs:integer, decimal numbers become xs:decimal, true/false values become xs:boolean, dates in YYYY-MM-DD format become xs:date, datetime strings become xs:dateTime, and everything else defaults to xs:string.
How are optional and repeated elements handled?
Elements that appear in some instances of a parent but not others are given minOccurs='0' (optional). Elements that appear more than once within a single parent element are given maxOccurs='unbounded' to allow repetition. This makes the generated schema permissive enough to validate the provided sample XML.
Can I add a target namespace to the schema?
Yes. Enter a namespace URI in the target namespace field (e.g., http://example.com/schema) before generating. The tool will add targetNamespace and xmlns attributes to the xs:schema root element and set elementFormDefault='qualified'.
Does the generated XSD work with all XML validators?
The generated XSD follows the W3C XML Schema 1.0 standard and should be compatible with most XML validators and parsers (Java, .NET, Python lxml, etc.). However, the schema is inferred from a sample, so it may need manual refinement for edge cases not present in your example XML.