External Citations
Checks for outbound links to authoritative sources — signals content quality and helps AI citations.
What this check measures
We count outbound (external-domain) links per page. Pages with zero external citations often read as opinion-only content, which AI answer engines are less likely to cite.
Why it matters
External citations to credible sources (Wikipedia, academic papers, official docs) signal you did research. Google uses this as a soft quality signal. AI search engines (ChatGPT, Perplexity) explicitly favor well-cited content for citations.
How our audit detects it
Parse all `<a href>` tags, filter to external domains, count per content page (excluding footer/nav).
Typical findings
- error_outlineBlog post makes factual claims with zero external references.
- error_outlineEvery external link points to the same site (hints at coordinated link-out pattern).
How to fix
When making factual claims, link to the source. Use `rel="noopener"` on `target="_blank"` links. Vary sources — do not link-out to only one external site repeatedly.
Frequently asked questions
Does linking out hurt SEO?expand_more
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