Link Analyzer Skill

Purpose

This skill provides comprehensive link analysis for static websites, including:

• Internal/external link extraction
• Broken link detection (HTTP validation)
• Link graph metrics (orphans, sinks, under/over-linked)
• False positive filtering (bot blockers, rate limits)
• SEO-focused recommendations

When to Use This Skill

• User asks to "analyze links" or "check broken links"
• User wants to find "orphan pages" or "dead ends"
• User mentions "internal linking" or "link structure"
• User needs to "find under-linked content"
• User wants to identify "link sinks" or "pages with no outbound links"
• User asks about "link juice" distribution

Link Analysis Types

1. Outbound Links Analysis

Extracts and categorizes all external links:

• Social media links
• E-commerce (Amazon, Gumroad)
• Email/Phone links
• App Store links
• General external websites

2. Internal Links Check

Validates all internal links point to existing pages:

• Handles path variations (with/without trailing slash)
• Checks for index.html alternatives
• Reports broken internal links

3. External Links Validation

HTTP checks on external links with smart filtering:

• Parallel requests for speed
• Retries for transient failures
• Filters false positives (bot blockers, rate limits)
• Categorizes by error type (404, timeout, SSL, etc.)

4. Link Graph Metrics (NEW)

Builds a complete link graph and calculates:

• Orphan Pages: Pages with zero inbound internal links
• Under-linked Pages: Pages below inbound link threshold
• Over-linked Pages: Pages above outbound link threshold
• Link Sinks: Pages that receive links but don't pass them (dead ends)
• Link Flow Ratio: Inbound vs outbound balance

Configuration

Create a config.json:

{
  "dist_path": "./dist",
  "site_domain": "example.com",
  "internal_domains": ["example.com", "www.example.com", "wp.example.com"],
  "excluded_paths": ["/tag/", "/category/", "/page/"],
  "http": {
    "timeout": 5,
    "max_workers": 20,
    "retry_count": 1,
    "user_agent": "LinkChecker/1.0"
  },
  "thresholds": {
    "underlinked_min_inbound": 3,
    "overlinked_max_outbound": 50,
    "link_sink_max_outbound": 2
  },
  "false_positive_domains": [
    "linkedin.com",
    "stackoverflow.com",
    "twitter.com",
    "facebook.com"
  ],
  "output": {
    "report_dir": "./reports",
    "data_dir": "./data"
  }
}

Workflow

Full Analysis

python scripts/analyze.py --dist ./dist --full

Individual Analyses

# Outbound links only
python scripts/outbound_links.py --dist ./dist

# Internal links check
python scripts/internal_links.py --dist ./dist

# HTTP validation (requires outbound data)
python scripts/http_checker.py --input outbound_links_data.json

# Link graph metrics
python scripts/link_graph.py --dist ./dist

Output Reports

Link Graph Report

LINK GRAPH ANALYSIS
==================

ORPHAN PAGES (0 inbound links): 15 pages
- /old-page-nobody-links-to/
- /draft-accidentally-published/
...

UNDER-LINKED PAGES (<3 inbound): 47 pages
- /great-article-needs-promotion/ (1 inbound)
- /hidden-gem-content/ (2 inbound)
...

OVER-LINKED PAGES (>50 outbound): 3 pages
- /resources/ (127 outbound)
...

LINK SINKS (receive but don't pass): 23 pages
- /about/ (15 inbound, 0 outbound)
...

Broken Links Report

ACTIONABLE BROKEN LINKS
======================

404 - Page Not Found: 25 links
- https://old-blog.com/post (5 occurrences)
...

Dead Domains: 8 links
- https://defunct-site.com (3 occurrences)
...

Timeouts: 4 links
- https://slow-affiliate.com (2 occurrences)

Metrics Definitions

Metric	Definition	SEO Impact
Orphan Page	Page with 0 inbound internal links	Critical - page may not be indexed
Under-linked	Page with fewer than threshold inbound links	High - page lacks authority signals
Over-linked	Page with more than threshold outbound links	Medium - dilutes link equity
Link Sink	Page with high inbound but low/no outbound	Medium - doesn't distribute link equity
Link Flow Ratio	Inbound links / Outbound links	Ideal around 1.0 for most pages

Example Usage

User: "Analyze my site's internal linking and find pages that need more links"

Claude will:

1. Build complete link graph from static files
2. Calculate inbound/outbound counts for every page
3. Identify orphan pages (critical SEO issue)
4. Find under-linked pages (opportunity for improvement)
5. Detect link sinks (pages that don't pass equity)
6. Generate actionable report with recommendations