What this means
Orphan pages have zero inbound internal links in the sampled crawl graph. They can only be discovered through the sitemap, not by following links from other pages. This means they receive no link equity and may be deprioritized by both search engines and AI crawlers. The JSON field is orphan_pages.
Detection condition
Triggered when a page has no inbound internal links discovered during the crawl. The detection is probabilistic — if SEODiff only samples 10% of your site, a page that appears orphaned might actually have links from uncrawled pages.
Dynamic severity
The severity of orphan detection adjusts based on overall orphan risk across the site:
- ≥85% orphan risk: High severity — systemic problem, likely poor internal linking.
- ≥40% orphan risk: Medium severity — significant portion of pages are isolated.
- <40% orphan risk: Low severity — likely a few outlier pages.
Suppressed when crawl coverage is <20% and fewer than 50 pages were sampled.
Common causes
- No category/hub links: Pages not linked from navigation, category pages, or related content.
- Sitemap-only pages: Pages added to sitemap but never linked from within the site.
- Removed from navigation: Pages that were once linked but got removed after a redesign.
- pSEO without index pages: Programmatic pages generated without corresponding hub/listing pages.
How to fix
- Add orphan pages to relevant category/listing pages or navigation.
- Create hub pages that link to groups of related pages.
- Add "related content" sections that cross-link between pages.
- Use breadcrumb navigation to establish hierarchy.
- For pSEO: ensure every programmatic page is reachable from at least one index page.