JsonifyTools
    Schema Toolkit · 100% Local · Browser Only

    XML Schema Generator

    Convert XML into inferred schema output and XSD-style field definitions for docs and integrations.

    Browser only Valid Schema / Data
    XML Input
    6 lines
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    Generated Schema from XML
    24 lines
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    Generated XSD
    15 lines
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    Schema Metrics

    Fields
    12
    Objects
    2
    Arrays
    1
    Constraints
    4

    Field Hierarchy Tree

    ❖Root(object)
    └─id*(integer)
    └─name*(string)
    └─email*(string)
    email
    └─active(boolean)
    └─createdAt(string)
    date-time
    └─profile(object)
    └─phone(string)
    └─country(string)
    └─company(string)
    └─roles(array)
    └─items[](string)

    Schema Constraints

    $.name(1 rule)
    minLength:1
    $.email(1 rule)
    format:email
    $.createdAt(1 rule)
    format:date-time
    $.roles[](1 rule)
    enum:["admin","developer","member"]
    XML to JSON Schema & XSD Generator
    JSON Schema • XSD • Browser Only

    XML Schema Generator Online — Convert XML to JSON Schema & XSD

    Automatically generate JSON Schema and XSD (XML Schema Definition) from XML documents. Our XML schema generator parses your XML, infers data types from text content, extracts XML attributes with the @_ prefix convention, detects repeated elements as arrays, preserves namespace prefixes, and outputs a validated schema definition. Perfect for SOAP API documentation, RSS feed validation, XML configuration file schemas, and legacy XML-to-JSON migration projects.

    Auto-Detect
    Type Inference
    @_ Prefix
    Attribute Extraction
    Preserved
    Namespace Support
    Browser Only
    Zero Server Uploads
    Live Conversion Examples

    Interactive XML → Schema Conversion Scenarios

    Click each scenario to see how different XML document types are converted into JSON Schema definitions:

    1. RSS Feed XML → Schema

    RSS / Atom Feed

    Converts an RSS 2.0 XML feed into a JSON Schema definition with nested channel/item structure, URI format detection on <link>, and XML attribute extraction (@_version).

    XML Input
    <?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
  <channel>
    <title>Tech Blog</title>
    <link>https://example.com</link>
    <item>
      <title>Getting Started with XML Schema</title>
      <pubDate>Mon, 14 Jul 2025 09:00:00 GMT</pubDate>
      <description>Learn XSD basics...</description>
    </item>
  </channel>
</rss>
    Generated JSON Schema
    {
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "rss": {
      "type": "object",
      "properties": {
        "@_version": { "type": "string" },
        "channel": {
          "type": "object",
          "properties": {
            "title": { "type": "string" },
            "link": { "type": "string", "format": "uri" },
            "item": {
              "type": "object",
              "properties": {
                "title": { "type": "string" },
                "pubDate": { "type": "string" },
                "description": { "type": "string" }
              }
            }
          }
        }
      }
    }
  }
}
    Type Mapping Reference

    XML Element → Schema Type Mapping Matrix

    How each XML pattern maps to JSON Schema types and their XSD equivalents:

    XML PatternJSON Schema TypeXSD EquivalentNotes
    Text content (e.g. <name>John</name>)"type": "string"xs:stringDefault for all text nodes
    Integer text (e.g. <age>25</age>)"type": "integer"xs:integerAuto-detected from numeric content
    Decimal text (e.g. <price>9.99</price>)"type": "number"xs:decimalDetected from decimal point
    Boolean (e.g. <active>true</active>)"type": "boolean"xs:booleanDetected from "true"/"false"
    Nested element (e.g. <address>...)</address>)"type": "object"xs:complexTypeChild elements become properties
    Repeated elements (e.g. <item>...</item>)"type": "array"xs:sequence maxOccursMultiple siblings → array
    XML attribute (e.g. version="2.0")"@_version": { "type": "string" }xs:attributePrefixed with @_ convention
    Namespace prefix (e.g. soap:Body)Preserved with colon notationxmlns namespaceMaintains XML namespace prefixes
    Empty element (e.g. <br />)"type": "string" (empty)xs:element nillableSelf-closing → nullable string
    Date text (e.g. <date>2025-07-14</date>)"format": "date"xs:dateISO 8601 date detection
    URI text (e.g. <link>https://...</link>)"format": "uri"xs:anyURIURL pattern detection
    Email text (e.g. <email>a@b.com</email>)"format": "email"xs:string + patternEmail pattern detection
    Under the Hood

    How XML to Schema Conversion Works Step-by-Step

    Step 1

    Parse XML Document

    The XML document is parsed into a DOM tree structure. Malformed XML is caught with line-level syntax error reporting. CDATA sections, processing instructions, and comments are handled gracefully.

    Step 2

    Walk Element Tree

    The engine recursively walks every XML element. Child elements become object properties, repeated siblings are detected as arrays, and XML attributes are extracted with the @_ prefix.

    Step 3

    Infer Types from Content

    Text content is analyzed for type inference: numeric strings → integer/number, "true"/"false" → boolean, ISO dates → format:date, URLs → format:uri, email addresses → format:email.

    Step 4

    Emit Schema & Export

    The final JSON Schema (or XSD) is assembled with proper nesting, type annotations, and format hints. The output is downloadable as .json for validation tooling or .xsd for XML-native workflows.

    Professional Guide

    Best Practices for XML Schema Generation

    1. Preserve XML Attributes with @_ Prefix Convention

    When converting XML to JSON Schema, use the @_ prefix convention (e.g. @_version, @_id) to distinguish XML attributes from child elements. This is the industry standard used by fast-xml-parser, xmltodict, and most XML-to-JSON converters.

    2. Detect Repeated Elements as Arrays

    When the same XML element name appears multiple times as siblings (e.g. multiple <item> tags), the converter should map them to a JSON Schema array with items definition rather than a single object.

    3. Enable Type Inference for Text Content

    Enable automatic type detection for XML text content: "42" → integer, "9.99" → number, "true"/"false" → boolean, ISO dates → format:date, URLs → format:uri, and email addresses → format:email.

    4. Handle Mixed Content and CDATA Sections

    XML elements with mixed content (text + child elements) or CDATA sections should be mapped to string types with documentation notes. Use #text convention for text nodes within mixed-content elements.

    Provide Representative Samples

    Include XML samples with all possible elements, attributes, and edge cases so the generator produces a comprehensive schema covering every field.

    Validate Against Generated XSD

    After generating an XSD, validate your XML corpus against it using xmllint --schema to catch any missed elements or type mismatches.

    Document Namespace Meanings

    Add descriptions to namespace-prefixed properties explaining what each XML namespace represents in your domain (e.g. soap: = SOAP protocol).

    Version Your Schemas

    Store generated schemas in version control alongside the XML samples they were derived from for traceability and change tracking.

    Full Schema Studio Suite

    Schema Studio Features — 7 Tools in One Platform

    1. XML Schema Generator

    Convert XML documents into inferred JSON Schema and XSD-style definitions with automatic type detection, attribute extraction, and namespace preservation.

    Input Example
    <user id="1">
  <name>John</name>
  <email>john@ex.com</email>
  <age>30</age>
</user>
    Output Result
    {
  "type": "object",
  "properties": {
    "user": {
      "type": "object",
      "properties": {
        "@_id": { "type": "integer" },
        "name": { "type": "string" },
        "email": { "type": "string", "format": "email" },
        "age": { "type": "integer" }
      }
    }
  }
}
    Automatic type inference from XML text content (string, integer, boolean)
    XML attribute extraction with @_ prefix convention
    Namespace prefix preservation (soap:Body, xs:element)
    Repeated sibling elements detected as arrays

    Why, When, & How to Generate Schemas from XML

    Why Generate Schemas from XML?

    Many enterprise systems still use XML for SOAP APIs, RSS feeds, configuration files, and data interchange. Generating a schema from XML documents enables automated validation, API documentation, type-safe code generation, and XML-to-JSON migration planning.

    When to Use XML Schema Generation?

    Use it when migrating SOAP APIs to REST/JSON, documenting legacy XML data formats, creating XSD validation for incoming XML feeds, generating TypeScript types from XML payloads, and onboarding new developers who need to understand XML data structures.

    How Does the Generator Work?

    Paste your XML document into the editor. The parser builds a DOM tree, recursively walks elements, infers types from text content, extracts attributes, detects arrays from repeated siblings, and outputs a JSON Schema or XSD definition.

    Programmatic XML Parsing & Schema Generation

    Parse XML and generate schemas programmatically in Node.js, Python, and CLI tools:

    // Node.js — XML to JSON Schema with fast-xml-parser
// npm install fast-xml-parser

const { XMLParser } = require('fast-xml-parser');

const parser = new XMLParser({
  ignoreAttributes: false,       // Preserve XML attributes
  attributeNamePrefix: '@_',     // Prefix attributes with @_
  allowBooleanAttributes: true,
  parseAttributeValue: true,     // Auto-detect numbers & booleans
  parseTagValue: true,
});

const xmlData = `
<users>
  <user id="1">
    <name>John Doe</name>
    <email>john@example.com</email>
    <age>30</age>
    <active>true</active>
  </user>
</users>
`;

const jsonObj = parser.parse(xmlData);
console.log(JSON.stringify(jsonObj, null, 2));

// Then feed jsonObj into a JSON Schema generator:
// const schema = generateSchema(jsonObj);
    Enterprise & Legacy Systems

    Enterprise XML Schema Use Cases & Legacy Migration

    SOAP to REST API Migration

    • Generate JSON Schema from SOAP WSDL/XML responses as migration targets
    • Map SOAP complex types to JSON Schema object definitions
    • Use schema diff to track migration progress from XML to JSON APIs
    • Generate TypeScript types from migrated schemas for new REST clients

    XML Data Feed Validation

    • Generate XSD from sample XML feeds (RSS, Atom, product catalogs)
    • Validate incoming XML data against generated schemas in CI/CD pipelines
    • Catch malformed XML payloads before they enter your data processing pipeline
    • Document third-party XML API formats for partner integration teams

    Configuration File Schema & Validation

    • Generate schemas from application config XML files (Web.config, pom.xml, AndroidManifest)
    • Validate configuration changes against schema before deployment
    • IDE autocompletion and validation powered by generated XSD schemas
    • Prevent configuration drift by enforcing schema compliance in CI/CD

    Frequently Asked Questions (FAQs)

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