<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [DOMSnapshot](./puppeteer.protocol.domsnapshot.md) > [NodeTreeSnapshot](./puppeteer.protocol.domsnapshot.nodetreesnapshot.md) > [contentDocumentIndex](./puppeteer.protocol.domsnapshot.nodetreesnapshot.contentdocumentindex.md) ## Protocol.DOMSnapshot.NodeTreeSnapshot.contentDocumentIndex property The index of the document in the list of the snapshot documents. <b>Signature:</b> ```typescript contentDocumentIndex?: RareIntegerData; ```