Free XML Schema Generator — XSD from XML
Generate an XSD schema from any XML document instantly — free, browser-only, no upload needed.
XML Input
XSD Schema Output
XML Schema Generator Examples
Sample XML is analyzed to infer an XSD schema. Example:
XML input vs generated XSD
Input XML:
Generated XSD schema:
Use Sample above to load more example data. The actual output may vary based on the schema generator logic.
What Is an XML Schema Generator?
XSD (XML Schema Definition) is a W3C standard for describing the structure, data types, and constraints of XML documents. It defines which elements and attributes are allowed, their order, and their content types. The W3C XML Schema specification defines the full XSD syntax.
This tool infers an XSD schema from a sample XML document. It analyzes elements, attributes, and nesting to produce a starting schema. Generation runs in your browser; nothing is sent to a server. You can then refine the schema manually for validation, documentation, or code generation.
How to Use This Tool
Paste or Upload XML
Paste your XML into the left editor or upload a file. Use Sample for example data. The more representative the sample (including optional elements, attributes, and varied content), the better the inferred schema. Ensure the XML is well-formed.
Review the Generated XSD
The right panel shows the generated XSD. Elements, attributes, and types are inferred from the sample. Check that the structure matches your expectations. You may need to adjust minOccurs, maxOccurs, or add constraints.
Copy, Download, or Edit
Use Copy or Download to save the schema. Edit it as needed for your use case. For validating XML against an XSD, use XML Validator. For JSON Schema from JSON, use JSON Schema Generator.
When to Use a Generated Schema
Use a generated XSD when you have sample XML and need a schema for validation, documentation, or tooling (e.g. code generation, IDE support). Common for SOAP APIs, RSS feeds, or enterprise integrations. It's a starting point—inferred schemas reflect only what appears in the sample. For JSON, use JSON Schema Generator.
Example: Generate XSD from an XML document
XML input:
<user>
<id>1</id>
<name>Alice</name>
<email>[email protected]</email>
<active>true</active>
</user>Generated XSD schema:
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="user">
<xs:complexType>
<xs:sequence>
<xs:element name="id" type="xs:integer"/>
<xs:element name="name" type="xs:string"/>
<xs:element name="email" type="xs:string"/>
<xs:element name="active" type="xs:boolean"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>Frequently Asked Questions
Is the schema complete?
It reflects the sample. Optional elements, minOccurs/maxOccurs, and constraints may need manual tuning. The generator infers structure from what it sees; it cannot know about elements that don't appear in your sample.
Can I validate XML against this XSD?
Yes. Use an XSD validator (e.g. XML Validator or external tools). This tool generates the schema; validation is a separate step. Ensure your XML references the schema correctly.
Is my data private?
Yes. Schema generation runs entirely in your browser. No XML or schema is sent to any server.
What can I do with the generated XSD?
Quite a lot! You can use it to validate XML documents (try the XML Validator), share it with teammates so everyone knows the expected structure, plug it into IDEs like VS Code or IntelliJ for XML autocompletion, or use it as a starting point for code generation tools. Just keep in mind it's inferred from your sample, so review it and add any constraints or optional elements your real data might have.
Related Tools
For XSD syntax and semantics, see W3C XML Schema and the XML Schema 1.1 Part 1. For XML, see the W3C XML specification and W3C XML. For parsing XML in the browser, see MDN DOMParser. For XPath (used in XSD), see XPath 3.1. For JSON Schema, see JSON Schema.