Sitemap – what it is and why it is not enough on its own

Definition

A sitemap is a file that lists the important URLs on a website to help search engines discover and crawl the content more efficiently.

What a sitemap contains

A standard sitemap lists the addresses of the website's pages and can include additional information:

• URL – the page's address, the only required field.
• lastmod – when the page was last changed in a meaningful way.
• Separate sitemaps – can also cover images, video and news content.

Google now ignores older fields such as priority and changefreq – they added nothing reliable.

Does your website need a sitemap?

Not always. A small, well-structured website where every page can be reached through internal links often does fine without one – the search engines find the pages anyway.

A sitemap really helps when the website is large, when it has new pages that are not yet linked internally, or when content sits deep in the structure. In those cases, it is a way of making sure nothing important is missed.

What a sitemap does not do

This is the most important point. Having a URL in the sitemap does not mean it gets indexed, ranks or is prioritised. According to Google Search Central, a submitted sitemap is a signal – not a guarantee that the pages will be crawled.

What actually decides how important a page is seen to be is internal linking and information structure. A page that only exists in the sitemap, with no internal links, risks being technically visible but strategically invisible.

Sitemaps for large websites

A single sitemap can contain no more than 50,000 URLs and be no larger than 50 MB uncompressed. Larger websites split their URLs across several sitemaps and list them in a sitemap index file – a sitemap that points to other sitemaps.

How to submit your sitemap

Put the sitemap at a fixed address, usually /sitemap.xml, reference it in robots.txt and submit it via Google Search Console. Webflow and most modern CMSs generate the sitemap automatically.

A website that does not show up in search rarely has a sitemap problem alone, though. We have gathered the most common causes in Website not ranking? The 10 most common causes.