Orphan Page

Links are how pages are found. Google says it primarily finds pages through links from other pages it has already crawled, and that the vast majority of the new pages it finds every day are found through links^[1]. It uses links both as a signal of relevance and to find new pages to crawl^[2]. A page with no link to it from its own site depends on the other ways of being found.

The other ways are a sitemap and links from other sites. A sitemap helps search engines discover URLs but does not guarantee that they are crawled and indexed, and Google says that if a site’s pages are properly linked it can usually discover most of the site, where proper linking means every page the site deems important can be reached through some form of navigation^[3]. A page listed only in the sitemap is discoverable. It is still an orphan.

A link has to be one a crawler can follow. Google can generally crawl a link only if it is an anchor element with an href attribute, and most links in other formats are not parsed and extracted^[2]. A page reached only through a script event or a menu built without href links is linked for readers and orphaned for the crawler.

Not every orphan is a fault. A campaign landing page, a thank-you page or a page kept unlinked on purpose is an orphan by design. The finding is a page the site wants found that nothing links to, and above all one that already shows in search: its impressions are earned without any help from the site’s own links. A link to nothing is the reverse of an orphan. In QueryRev’s study, of the 3,298 links checked in the llms.txt files found, 92.6% answered with a page^[4].

Compare two lists. The first is the pages a crawl reaches from the home page by following links the way a crawler does. The second is the pages known from other sources: the sitemap, the URLs that have impressions in Search Console, the server logs and the analytics landing pages. An orphan is a URL in the second list and not in the first.

Add what each orphan earns. Count the orphans, their share of the known pages, how many are listed in the sitemap and how many already have impressions or clicks. The last group is where the work starts, since removing or leaving a page that earns visibility costs something.

Check the links themselves. A page can be linked in the browser and orphaned in the crawl, so read the rendered HTML of the page that should link to it. Google advises using the URL Inspection tool to check that anchor text inserted by JavaScript is present in the rendered HTML^[2].

Sample data: an invented site, to show the method.

A crawl of a sample site from its home page reaches 1,840 URLs by following links. Its sitemap lists 2,000. The 160 listed URLs that no link path reaches are orphans, and Search Console shows impressions for 40 of them.

The site begins with the 40. For each it chooses one of three actions: link it from the category and the related pages it belongs with, in the page text and with descriptive anchor text; merge it into a stronger page and redirect it; or leave it unlinked on purpose and take it out of the sitemap. After the links are added, a new crawl is compared with the old, and the count of orphans is read again.