Term
Sitemap
A sitemap is an XML file listing all relevant URLs of a website — it helps search engines crawl and index large sites systematically.
Sitemap — explained in more detail
The XML sitemap (/sitemap.xml) is a machine-readable URL list that explains a site’s structure to search-engine crawlers. Each URL can optionally carry metadata: <lastmod> (last change), <changefreq> and <priority> — though Google now largely ignores changefreq and priority while still using lastmod for crawl scheduling.
A sitemap doesn’t guarantee indexing — it’s a recommendation, not an order. But it dramatically speeds up discovery of new pages, especially on deeply nested sites, new domains and news content. Each sitemap file is limited to 50,000 URLs or 50 MB uncompressed; larger sites use sitemap index files that bundle multiple sitemaps.
Example / practical context
Entry in robots.txt for automatic discovery:
Sitemap: https://example.com/sitemap.xmlSubmit it additionally in Google Search Console — that’s also where you’ll find indexing reports per sitemap.
Distinction from similar terms
An HTML sitemap is an overview page made for humans — barely relevant today. The XML sitemap is for crawlers. robots.txt says what should not be crawled; the sitemap, what is crawlable.
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301 Redirect
A 301 redirect is an HTTP status code permanently redirecting one URL to another — the standard for URL changes, domain moves and site migrations.
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How crawl budget, robots, sitemap, JS rendering, indexing, canonical and Core Web Vitals fit together — the full arc for production sites.
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