Reading your site’s link graph: orphans, hubs, and gaps
Your internal link graph is the map of how your pages connect to each other — and it reveals which pages AI can reach, relate, and trust. Reading it quickly surfaces three things worth fixing: orphan pages no one links to, weak hubs that should concentrate authority but don’t, and high-relevance pages that should link to each other but don’t. These missing connections are usually among your fastest wins.
What a link graph is
Picture every page on your site as a dot, and every internal link as a line between dots. That’s your link graph. It’s not just a tidy diagram — it’s how both crawlers and AI engines discover your pages, understand which topics relate, and judge which pages you treat as important. A page’s place in the graph shapes how visible it is.
Orphans: pages nothing links to
An orphan page has few or no internal links pointing to it. Even if it’s good, it’s nearly invisible — hard for crawlers to reach and easy for engines to overlook. Orphans are common after redesigns, migrations, or when content is published without being woven into the site. Rescuing them — adding a few relevant internal links — is often the single fastest improvement you can make.
Hubs: pages that should concentrate authority
Hubs are your important pages — pillars, key category or product pages — that should pull together the cluster of content around them. A weak hub is one that isn’t linked the way its importance warrants, so the authority that should flow to it doesn’t. Strengthening hubs tells engines which pages are your center of gravity on a topic.
Gaps: links that should exist but don’t
The most valuable thing a link graph reveals is the connection you’re missing: two pages that are clearly about related things but don’t link to each other. Closing those gaps helps engines understand your topical structure — and helps readers — with very little effort, since both pages already exist.
Turning the read into quick wins
A link-graph read translates directly into a short, high-leverage to-do list: rescue the orphans, shore up the weak hubs, and add the obvious missing links. None of it requires new content — it’s about connecting what you already have so engines can make sense of it.