XML to XSD Converter
Generate XSD (XML Schema Definition) from XML documents with intelligent type inference and occurrence constraints. Create schema definitions for validation, API contracts, and data integration.
Configuration Options
The namespace URI for the generated schema
Automatically detect xs:int, xs:boolean, xs:date, etc.
Add minOccurs and maxOccurs for repeated elements
Detect email and URI patterns (xs:anyURI)
Set all attributes as use="required" instead of optional
Whether elements must be namespace-qualified
Recommended Settings
XSD Schema Best Practices
- •Enable type inference to generate precise XSD types (xs:int, xs:boolean, xs:date) instead of generic xs:string
- •Use qualified elementFormDefault for schemas shared across systems to avoid naming conflicts
- •Enable occurrence constraints to properly handle repeated elements with maxOccurs="unbounded"
- •Set meaningful target namespace URIs that represent your organization or project
- •Keep attributes optional by default unless they're truly required for valid XML
Common Use Cases
- •SOAP web services: Generate XSD for WSDL message definitions and API contracts
- •XML validation: Create schemas to validate XML documents in parsers and validators
- •Data integration: Define B2B/EDI message formats for enterprise integration
- •Configuration files: Schema for XML configs with validation in IDEs
- •Code generation: Input for JAXB, xsd.exe, or other data binding tools
Pro Tips
- •Paste XML and it auto-validates - schema generation triggers when valid XML detected
- •Green checkmark indicates well-formed XML ready for schema generation
- •Customize target namespace to match your project or organization URI
- •Generated XSD can be used for validation in most XML tools and parsers
Most Popular
Most users enable type inference and occurrence constraints with unqualified elements
When to Use This Tool
Create schema definitions to validate XML documents against expected structure and data types. XSD schemas ensure XML data conforms to business rules, field requirements, and format constraints. Essential for data quality, API contracts, and enforcing structural integrity across XML-based systems.
Recommended: Data Quality
Generate XSD schemas for SOAP web services and XML-based API contracts. Document request/response formats, define message structures, and create machine-readable API specifications. Perfect for SOAP APIs, enterprise integrations, and systems requiring formal XML schema definitions.
Recommended: API Design
Define XML data exchange formats for enterprise integration and B2B communication. Create schemas for EDI messages, financial transactions, healthcare HL7 documents, and supply chain data. Ensures all parties understand and validate XML payloads consistently.
Recommended: Enterprise Integration
Create schemas for XML configuration files to ensure proper structure and values. Validate application configs, deployment manifests, and system settings against expected format. Prevents configuration errors and provides autocomplete in XML-aware editors.
Recommended: DevOps
How It Works
Paste or type your XML document into the input field
Tool automatically validates XML using browser's DOMParser API
Recursively analyzes XML structure: elements, attributes, text content, nesting
Detects element repetition patterns for occurrence constraints (minOccurs/maxOccurs)
Infers XSD types from values: xs:int, xs:boolean, xs:decimal, xs:date, xs:dateTime, xs:anyURI
Generates xs:complexType definitions for elements with children or attributes
Creates xs:sequence structures to preserve element ordering from XML
Adds attribute definitions with use="required" or use="optional" based on settings
Builds complete XSD schema with namespace declarations and schema structure
Formats output with selected indent size (2 or 4 spaces) for readability
Copy XSD to clipboard or download as .xsd file ready to use
All processing happens in browser - your data never leaves your device
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side JavaScript with browser's native DOMParser API for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
What is XSD?
XSD (XML Schema Definition) is a W3C standard for defining the structure, content, and data types of XML documents. It provides more powerful validation capabilities than DTD (Document Type Definition), including support for data types, namespaces, and complex element relationships. XSD schemas are themselves written in XML format.
What's the difference between qualified and unqualified elements?
Qualified elements must include the namespace prefix in XML documents (e.g., <ns:user>), while unqualified elements don't require a prefix (e.g., <user>). Setting elementFormDefault="qualified" enforces namespace prefixes for stricter validation. Use "qualified" for schemas shared across systems to avoid naming conflicts.
How does type inference work?
The tool analyzes element and attribute values to detect patterns and assign appropriate XSD types. Integers become xs:int, true/false becomes xs:boolean, dates become xs:date, decimals become xs:decimal, etc. Disable type inference to use xs:string for all values if you need maximum flexibility or your XML uses string representations intentionally.
Can I customize the target namespace?
Yes! The target namespace can be configured in the options panel. It should be a URI that represents your organization or project (e.g., http://example.com/schema or urn:company:project:schema). This namespace uniquely identifies your schema and prevents naming conflicts when combining schemas from different sources.
Is my XML data sent to a server?
No. All conversion happens entirely in your browser using JavaScript. Your XML data never leaves your machine, ensuring complete privacy and security. The tool uses browser APIs (DOMParser) to parse XML and generates XSD schemas locally without any server communication.
What are occurrence constraints (minOccurs/maxOccurs)?
These specify how many times an element can appear in valid XML. The tool detects repeated elements (multiple <item> tags) and sets maxOccurs="unbounded" to allow multiple occurrences. minOccurs defines the minimum required occurrences (0 for optional, 1 for required). This ensures XML validators can check element repetition patterns.
How do I use the generated XSD schema?
Save the XSD file and reference it in your XML documents using xsi:schemaLocation attribute. Most XML validators, parsers, and IDE tools (Visual Studio Code, IntelliJ, Eclipse) can validate XML against XSD automatically. You can also use XSD for code generation tools (JAXB, xsd.exe) to create data binding classes in various programming languages.
Does this handle XML namespaces?
Yes! The tool preserves namespace prefixes in element names. If your XML uses namespaces (xmlns declarations), the element names will include the prefix (e.g., ns:user). The generated XSD includes the targetNamespace declaration, and you can configure whether elements must be qualified (namespace-prefixed) or unqualified.