What is Sitemap (XML)?
A file at /sitemap.xml that lists every indexable URL on your site. Helps search engines discover content faster and more completely.
Also known as: XML sitemap, sitemap.xml
A sitemap is an XML file that explicitly lists URLs you want indexed, along with metadata: lastmod (when each page was last updated), priority (relative importance, though Google largely ignores this), and changefreq (how often it changes).
The sitemap is submitted to Google Search Console after launch. Google uses it as a discovery aid — especially valuable for: new sites without backlinks yet, large sites where some URLs are hard to discover via internal linking, and sites with content that updates frequently.
Sitemaps should be auto-generated, not hand-edited. Modern frameworks (Next.js, Astro) generate them from your content sources automatically. The sitemap should match exactly what's actually indexable — if a URL is in the sitemap but returns 404, Google flags it as a quality issue.
A correct sitemap dramatically speeds up indexing for new pages — sometimes from weeks to days. For sites under active publishing, that's the difference between content ranking this month vs next quarter.
Related