A machine-readable list of a site’s important URLs, submitted to help search engines discover and prioritise them.
An XML sitemap is a structured file listing the URLs you want search engines to know about, optionally with a lastmod date signalling when each page changed. You submit it in Search Console. It does not force anything to rank — it is a discovery and prioritisation aid that helps crawlers find pages efficiently.
A sitemap should contain only indexable, canonical, 200-status URLs — the exact set you want ranked. Do not include redirects, noindexed pages, or non-canonical duplicates; that erodes Google’s trust in the file. On large sites, split into multiple sitemaps under a sitemap index (by content type or section) so the Search Console coverage report becomes a diagnostic: indexed vs submitted per segment tells you where quality problems live.
Treat the sitemap as a reconciliation tool between what you think you publish and what Google actually indexes. Accurate lastmod dates genuinely help recrawl priority on large, frequently-updated sites — but only if you keep them honest; fake freshness gets ignored. For news, video, and image assets, the specialised sitemap formats unlock discovery you cannot get any other way.
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