XML DOCTYPE After Root Element – Move DOCTYPE to the Prolog

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A document type declaration belongs in the XML prolog before the root element, not in the epilog after it closes.

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XML prolog troubleshooting

How to fix a DOCTYPE placed after the XML root element

The sample emits <!DOCTYPE root> after <root/> has already completed the document element. A DOCTYPE, when present, belongs before the root so it can describe the document type during parsing. This tool is free to use. No account or payment is required.

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What you can do here

  • XML well-formedness validation
  • Broken XML example preloaded
  • Corrected XML comparison
  • .xml file import
  • Browser parser feedback
  • Browser-local processing

Steps

  1. Find <!DOCTYPE in the source and determine whether it belongs to this XML document.
  2. Move the declaration ahead of the root element and after any XML declaration when one is present.
  3. Validate the complete document and remove duplicate declarations from concatenated fragments.

DOCTYPE is part of the prolog, not trailing document content

The document type declaration is parsed before the document element. Placing it after the root is structurally similar to appending other forbidden document-level content after the XML tree has ended.

DOCTYPE after root XML example

Move the DOCTYPE before the root element.

Invalid XML

<root/><!DOCTYPE root>

Corrected XML

<!DOCTYPE root><root/>

Common questions

Frequently asked questions

Is DOCTYPE required in XML?

No. Many XML documents do not use a document type declaration.

Where does DOCTYPE go relative to the root?

Before the root element, in the document prolog.

Does VetaTool validate DTD rules?

No. This validator checks XML well-formedness rather than DTD validity constraints.

Recommended next steps

XML Declaration Not at StartMove the XML declaration to the beginning of the document before the root element.Text After XML Root ElementRemove trailing character data that appears after the document element closes.XML Validator Online – Check XML SyntaxPaste any XML document and check well-formedness locally in your browser.

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