The comparison, step by step
Two lists and a diff. It is genuinely this simple and it is rarely done.
First, extract every URL from your sitemaps. That is your list of pages you have asked search engines to consider.
Second, get the list of URLs your own site links to. A crawl of internal links produces it, and our sitemap generator will do a small version by following links from your homepage.
Anything in the first list and not the second is an orphan. On most sites there are more than the owner expects.
Why orphans rank badly
Because your site is sending two contradictory signals about the same page, and internal linking is the stronger of the two.
A sitemap entry says please consider this page. Zero internal links says this page is not part of our site's structure. Search engines weigh how a site organises itself heavily, so the absence of links tends to win.
There is a practical dimension too. Internal links are how authority moves around a site. A page with no inbound links receives none of it, so even a good page starts from nothing.
A worked example from this site
We are not speculating: venbit.ai had this problem badly and fixing it was measurable.
Over two hundred pages were reachable only through the sitemap. Seven content clusters had no index page at all, so /guides, /compare, /alternatives and four others returned 404 while their child pages sat in the sitemap.
Fixing it meant building the missing hub pages, linking them from the homepage and footer, and adding a full sibling index to the foot of every page. Internal links per page went from about 19 to roughly 90.
Google Search Console was showing impressions on those pages at an average position around 41, which is to say indexed but invisible. That is what an orphan looks like in the data.
Fixing them properly
Add a real link from somewhere relevant. A hub page listing every item in a cluster is the highest-leverage version, because one page fixes many orphans at once.
Resist two tempting shortcuts. Do not add links in the footer alone, because a footer link on every page is weak and undifferentiated. And do not remove the page from the sitemap to make the report clean, which hides the problem rather than solving it.
If a page genuinely deserves no link from anywhere, consider whether it should exist. Merging it into a stronger page is often better than either linking or deleting.
Common questions
What is an orphan page?+
A page with no internal links pointing at it. If it is also in your sitemap, you are asking search engines to index a page your own site treats as unimportant.
How do I find them?+
Extract every URL from your sitemaps, then compare against the URLs your own site links to. Anything in the first list and not the second is an orphan.
Do orphan pages actually rank worse?+
Generally yes. Internal linking is a strong signal about how a site organises itself, and it is how authority moves between pages. A page with no inbound links receives none of it.
Should I just remove them from the sitemap?+
No, that hides the problem. Either link to the page from somewhere relevant, or merge it into a stronger page if it does not deserve a link.
Sources