# Sitemap index 0.9

Source: https://xmlvalid.com/schemas/sitemap-index-0.9

> An index that points search engines at several sitemap files.

Large sites split their sitemap into several files and list them in a sitemap index, which is submitted instead.

- Type: XSD
- Version: 0.9
- Namespace: `http://www.sitemaps.org/schemas/sitemap/0.9`
- Root element: `sitemapindex`
- Publisher: sitemaps.org (CC BY-SA 2.5), source: https://www.sitemaps.org/protocol.html#index
- Validate against it: https://xmlvalid.com/validate?schema=sitemap-index-0.9