Free Internal Link Graph Mapper

Enter a website URL to build a directed graph of internal links. See in-degree and out-degree stats for every page, identify orphan pages with no inbound links, and find dead-end pages that do not link to anything else on your site.

Why Internal Linking Matters for SEO

Internal links are one of the most powerful and underused SEO levers. They tell search engines which pages are important, how content is organized, and how link equity (ranking power) flows across your site. A well-structured internal link graph ensures that crawlers can discover every page, understand topical relationships, and distribute authority from high-ranking pages to newer or deeper content.

Without a deliberate internal linking strategy, sites often develop orphan pages that search engines cannot find, dead-end pages that trap users and link equity, and uneven link distribution where a few pages get all the internal links while others get none. This tool helps you diagnose these issues by mapping the actual link connections between your pages.

Understanding In-Degree and Out-Degree

In graph theory, in-degree measures how many edges point toward a node, and out-degree measures how many edges leave a node. For internal linking:

• In-degree (inbound links): The number of other pages on your site that link to this page. Higher in-degree means the page is well-connected and easier for crawlers and users to find. Pages with zero in-degree are orphans.
• Out-degree (outbound links): The number of internal pages this page links to. Pages with zero out-degree are dead ends — they do not pass link equity or guide users to more content. Healthy pages link to 3-10 relevant internal pages.

The balance between in-degree and out-degree across your site reveals how well your internal linking strategy distributes authority. Pages with high in-degree but low out-degree hoard link equity. Pages with high out-degree but low in-degree are generous linkers that may not receive enough authority themselves.

How to Use This Tool

1. Enter your website URL — The tool fetches your XML sitemap to discover pages, then crawls up to 50 pages to extract all internal links.
2. Click "Analyze" — Crawling may take up to a minute depending on your site speed. The tool processes pages in parallel for efficiency.
3. Review the score — The score factors in orphan page ratio, dead-end ratio, average in-degree, and average out-degree. Higher is better.
4. Check summary cards — See total pages, total internal links, orphan count, dead-end count, and average degree metrics at a glance.
5. Examine the page table — Pages are sorted by in-degree (lowest first) to surface under-linked pages. Orphan pages are highlighted in red, dead ends in yellow.
6. Follow recommendations — The tool provides specific advice on how to fix orphan pages, dead ends, and improve link distribution.

Common Internal Linking Issues

Frequently Asked Questions

What is an internal link graph?

An internal link graph is a directed graph where each node represents a page on your website and each edge represents a hyperlink from one page to another. It shows how pages are connected through internal links, revealing the flow of link equity and crawl paths across your site. Analyzing this graph helps you identify structural issues like orphan pages, dead ends, and uneven link distribution.

What are in-degree and out-degree in internal linking?

In-degree is the number of internal links pointing TO a page from other pages on your site. Out-degree is the number of internal links going FROM a page to other pages. A healthy page should have both inbound links (so search engines can find it) and outbound links (to distribute link equity and help users navigate to related content).

What is an orphan page in SEO?

An orphan page is a page that exists on your website (appears in the sitemap) but has zero internal links pointing to it from other pages. Search engines may struggle to discover and crawl orphan pages, which can prevent them from being indexed and ranking in search results. The fix is to add contextual internal links from related pages.

Why are dead-end pages bad for SEO?

Dead-end pages have zero outbound internal links, which means they do not pass link equity to other pages on your site. They also create poor user experience because visitors have no contextual navigation to continue exploring your content. Adding related links or next-step CTAs on dead-end pages improves both SEO and engagement metrics.

How many internal links should a page have?

There is no fixed number, but best practice suggests each page should have at least 3-5 internal links pointing to it and link out to 3-10 relevant pages. The key is relevance — links should connect topically related content. Navigation menus, footer links, and contextual in-content links all contribute to a healthy internal link graph.