seo-linkgraph
Internal link graph analysis with PageRank-like scoring, orphan page detection, dead-end detection, cannibalization detection, and auto-suggested missing internal links. Use when user says "link graph", "internal links", "orphan pages", "link equity", "cannibalization", or "PageRank".
What this skill does
# Internal Link Graph Analysis Analyze how internal links distribute authority across your site. ## Capabilities ### PageRank-like Scoring - Simplified PageRank algorithm on internal link graph - Shows relative importance of each page based on link structure - Identifies pages receiving disproportionate/insufficient link equity ### Orphan Page Detection - Pages in sitemap but unreachable by internal links - Pages with zero incoming internal links (except homepage) - Compares crawl graph vs sitemap for coverage gaps ### Dead-End Detection - Pages with zero outgoing internal links - Users and crawlers get trapped on these pages - Fix by adding contextual internal links ### Hub & Authority Pages - **Hub pages**: High outgoing link count (navigation, category pages) - **Authority pages**: High incoming link count (popular content) - Imbalance detection (e.g., /pricing has 3 incoming vs /blog has 47) ### Cannibalization Detection - TF-IDF similarity between page titles and H1s - Flags pages competing for the same keyword space - Similarity threshold: >60% word overlap (stopwords excluded) ### Auto-Suggested Links - Scans page content for mentions of other page topics - Suggests: source URL, target URL, anchor text, reason - Only suggests links that don't already exist ## Commands | Command | What it does | |---------|-------------| | `/seo linkgraph <url>` | Full link graph analysis | | `/seo linkgraph <url> --suggest` | Focus on link suggestions | | `/seo linkgraph <url> --orphans` | Focus on orphan pages | | `/seo linkgraph <url> --cannibalization` | Focus on cannibalization | ## Output ### Link Equity Distribution ``` Top 5 by PageRank: Bottom 5 by PageRank: 1. / 0.0842 1. /blog/old-post 0.0003 2. /blog 0.0531 2. /terms 0.0005 3. /pricing 0.0412 3. /blog/draft 0.0007 4. /features 0.0389 4. /careers/old 0.0008 5. /about 0.0301 5. /press/2023 0.0010 ``` ### Suggested Links ``` SOURCE: /blog/seo-tips/ TARGET: /services/schema-audit/ ANCHOR: "schema markup audit" REASON: Content mentions 'schema markup' 4× but doesn't link to target page ``` ## Engine Uses `engine/link_graph.py` which implements: - PageRank with damping factor 0.85, 50 iterations - Jaccard similarity for cannibalization (stopword-filtered) - Keyword → URL mapping for link suggestions
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