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XML Validator

Check that XML is well-formed: unclosed or mismatched tags, duplicate attributes, bad entities.

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How to use the XML Validator

  1. Paste your input, drop a file, open a URL or press Sample.
  2. Pick the options - the result updates as you type (or press Run / Ctrl+Enter).
  3. Copy, download, use the result as the next input, or share a read-only link.
PrivateEverything runs in your browser; nothing is uploaded unless you share or save.
FastEngines load on demand and keep working offline once loaded.
Save & shareKeep results in your library with versions, or share a read-only link.

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