[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [DOM](./puppeteer.protocol.dom.md) > [Node](./puppeteer.protocol.dom.node.md) > [xmlVersion](./puppeteer.protocol.dom.node.xmlversion.md) ## Protocol.DOM.Node.xmlVersion property `Document`'s XML version in case of XML documents. Signature: ```typescript xmlVersion?: string; ```