XML · Schema

XML Document

JSON Schema describing the metadata and high-level structure of an XML document, including version, encoding, namespaces, doctype declaration, processing instructions, and the root element.

Data FormatsDocumentMarkup LanguageStandardW3CWeb ServicesXML

Properties

Name	Type	Description
version	string	XML version declared in the XML declaration.
encoding	string	Character encoding declared in the XML declaration.
standalone	boolean	Whether the document is standalone (no external markup declarations affect the content).
doctype	object	Document Type Declaration (DOCTYPE) information.
processingInstructions	array	Processing instructions declared at the document root.
namespaces	array	Namespace declarations in scope on the root element.
rootElement	string	Local name of the root element.
schemaLocation	string	Optional xsi:schemaLocation value pairing namespaces to schema URIs.
noNamespaceSchemaLocation	string	Optional xsi:noNamespaceSchemaLocation value for documents without a target namespace.
validation	object	Validation status and metadata for the document.
uri	string	URI of the XML document.
created	string	Date the document was created.
modified	string	Date the document was last modified.

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/xml/refs/heads/main/json-schema/xml-document-schema.json",
  "title": "XML Document",
  "description": "JSON Schema describing the metadata and high-level structure of an XML document, including version, encoding, namespaces, doctype declaration, processing instructions, and the root element.",
  "type": "object",
  "properties": {
    "version": {
      "type": "string",
      "description": "XML version declared in the XML declaration.",
      "enum": ["1.0", "1.1"],
      "default": "1.0",
      "examples": ["1.0"]
    },
    "encoding": {
      "type": "string",
      "description": "Character encoding declared in the XML declaration.",
      "default": "UTF-8",
      "examples": ["UTF-8", "UTF-16", "ISO-8859-1"]
    },
    "standalone": {
      "type": "boolean",
      "description": "Whether the document is standalone (no external markup declarations affect the content)."
    },
    "doctype": {
      "type": "object",
      "description": "Document Type Declaration (DOCTYPE) information.",
      "properties": {
        "name": {
          "type": "string",
          "description": "Root element name declared in the DOCTYPE."
        },
        "publicId": {
          "type": "string",
          "description": "Public identifier of the external DTD subset."
        },
        "systemId": {
          "type": "string",
          "format": "uri-reference",
          "description": "System identifier (URI) of the external DTD subset."
        }
      }
    },
    "processingInstructions": {
      "type": "array",
      "description": "Processing instructions declared at the document root.",
      "items": {
        "type": "object",
        "properties": {
          "target": {
            "type": "string",
            "description": "Processing instruction target (e.g. xml-stylesheet)."
          },
          "data": {
            "type": "string",
            "description": "Processing instruction data."
          }
        },
        "required": ["target"]
      }
    },
    "namespaces": {
      "type": "array",
      "description": "Namespace declarations in scope on the root element.",
      "items": {
        "type": "object",
        "properties": {
          "prefix": {
            "type": "string",
            "description": "Namespace prefix (empty string for default namespace).",
            "examples": ["", "xs", "xsl", "soap"]
          },
          "uri": {
            "type": "string",
            "format": "uri",
            "description": "Namespace URI.",
            "examples": ["http://www.w3.org/2001/XMLSchema"]
          }
        },
        "required": ["uri"]
      }
    },
    "rootElement": {
      "type": "string",
      "description": "Local name of the root element.",
      "examples": ["catalog", "soap:Envelope", "feed"]
    },
    "schemaLocation": {
      "type": "string",
      "description": "Optional xsi:schemaLocation value pairing namespaces to schema URIs."
    },
    "noNamespaceSchemaLocation": {
      "type": "string",
      "format": "uri-reference",
      "description": "Optional xsi:noNamespaceSchemaLocation value for documents without a target namespace."
    },
    "validation": {
      "type": "object",
      "description": "Validation status and metadata for the document.",
      "properties": {
        "wellFormed": {
          "type": "boolean",
          "description": "Whether the document is well-formed per the XML specification."
        },
        "valid": {
          "type": "boolean",
          "description": "Whether the document is valid against the declared DTD or schema."
        },
        "schemaType": {
          "type": "string",
          "description": "Type of schema used for validation.",
          "enum": ["DTD", "XSD", "RelaxNG", "Schematron", "None"]
        }
      }
    },
    "uri": {
      "type": "string",
      "format": "uri-reference",
      "description": "URI of the XML document."
    },
    "created": {
      "type": "string",
      "format": "date",
      "description": "Date the document was created."
    },
    "modified": {
      "type": "string",
      "format": "date",
      "description": "Date the document was last modified."
    }
  },
  "required": ["version", "rootElement"]
}