Orphan pages and deep pages
Two symptoms, one cause. Both describe a page that your own site structure fails to vouch for, and both are fixed by the same thing: internal links written into content rather than left to navigation.
Orphan pages
An orphan page is a published page that receives zero internal links from other pages on your site. Search engines can still find it through your sitemap, but without internal links they have no context signal about its importance or its relationship to anything else.
Why it is a problem
Crawlers prioritise pages that are well connected. An orphan page effectively says: this page exists, but nothing else on the site considers it important enough to link to. The result is lower crawl frequency, lower perceived authority, and weaker rankings.
How to detect them
Use a site crawler — Screaming Frog, Sitebulb, Ahrefs Site Audit — to generate an internal link report, then filter for pages with zero inbound internal links. Compare that list against your sitemap to confirm the pages are published and indexed.
One caveat worth applying: count editorial links separately from navigation. A link repeated in the header or footer of 200 pages does not carry the weight of a link written into a sentence, and a report that counts both will tell you a page is well supported when it is not.
Deep pages
A deep page requires four or more clicks from the homepage to reach through navigation.
Why depth matters
Pages closer to the homepage in click distance tend to receive more crawl attention. A page two clicks away is crawled more often than one six clicks deep, even when both sit in the sitemap. Users are also less likely to find it.
How internal links flatten depth
Every internal link creates a new path between two pages, bypassing the navigation hierarchy entirely.
If a page is buried five clicks deep in a category tree and a well-linked article points directly at it, its effective depth drops to two. You have not touched your menus; you have changed the graph.
How the pipeline addresses both
When Automatic Internal Links runs its SYNC, it scans all content for focus keyword matches. If a page's focus keyword appears in the text of other pages, links are created automatically.
The two effects follow from the same pass: orphan pages stop being orphans because something now links to them, and deep pages get shallower because those links bypass the hierarchy. A product page buried in a WooCommerce category can receive a direct link from any article that mentions the product name.
This is also why the keyword layer has to exist first. No keywords means no matches, which means neither problem gets addressed.
Pages that may legitimately stay orphaned
Not every page should be linked. Thank-you pages, landing pages built for a specific conversion path, and legal pages are often better left out of the link graph.
Use the per-page exclusion metabox for those, and do not count them as defects when you audit.
Read next
- Internal linking strategy — where this fits in the wider plan
- Anchor text for internal links — what to write once the link exists
- The pipeline — the four problems internal linking addresses
- Automatic Internal Links — the tool that builds the links