Diagnoses indexing, crawlability, and on-page SEO issues across an entire site using automated crawls, Lighthouse checks, and structured output. An SEO audit surfaces actionable findings ranked by priority before manual review, making it possible to address critical issues quickly rather than discovering them through traffic drops.
Use cases
- Pre-launch SEO validation for a new website before it becomes publicly discoverable
- Diagnosing a site migration where URL changes, canonical tags, and redirects need to be verified across hundreds of pages
- Debugging unexplained traffic drops by auditing indexation status and crawl errors in bulk
- Running a periodic SEO health check to catch issues before they compound into significant traffic loss
- Auditing a large website after a redesign or platform migration where SEO signals may have been inadvertently damaged
Key features
- Crawl all discoverable pages using a site crawler, capturing HTTP status codes, canonical tags, meta robots directives, and internal link structure
- Run Lighthouse on a representative sample of key pages, capturing Core Web Vitals (LCP, FID, CLS), accessibility issues, and best-practice violations
- Check robots.txt for overly restrictive directives, sitemaps for completeness, and hreflang tags for correct pairing on multilingual sites
- Compile findings into a prioritized report: critical issues that directly affect indexing (4xx errors, noindex directives, canonical conflicts) should be addressed before medium and low-priority items
- Create a follow-up audit plan to verify that critical issues have been resolved after remediation and that the fixes did not introduce new problems
When to Use This Skill
- When preparing to launch a new site or significant redesign and wanting to catch SEO issues before they affect search visibility
- When experiencing unexplained traffic drops and needing to diagnose crawlability or indexing issues
- When a site migration or platform change may have inadvertently introduced SEO regressions
Expected Output
A prioritized SEO audit report with critical issues flagged for immediate remediation, medium-priority items scheduled, and a baseline measurement of Core Web Vitals for key pages.
Frequently Asked Questions
- How often should I run an SEO audit?
- Run a full audit quarterly and after any major site migration, redesign, or platform change. Run targeted checks (crawl error monitoring, Core Web Vitals) monthly using automated monitoring tools.
- What is the most common SEO mistake discovered in audits?
- Canonical tags pointing to the wrong URL or missing on duplicate content pages, causing search engines to index the wrong version of a page. On large sites, this is often systemic and indicates a templating issue rather than an isolated page problem.
- How do I prioritize SEO issues when there are thousands of findings?
- Focus on issues that directly prevent indexing: 4xx errors on high-traffic pages, missing canonical tags on duplicate content, noindex on pages you want indexed, and hreflang errors on multilingual sites. Everything else is optimization.
Related
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3 Indexed items
SEO indexing check
Reviews sitemap completeness, canonical URL configuration, hreflang pairing for bilingual sites, robots.txt directives, and Search Console signals before publishing a content batch. This is especially important for bilingual static sites where indexing misconfigurations can cause search engines to index the wrong locale or deprioritize pages unfairly.
Git worktrees for isolation
Uses Git worktrees to create isolated working directories attached to the same repository, each on a different branch, so parallel experiments or long-running tasks do not interfere with the main working tree or require repeated stash-and-reapply cycles. This is especially useful when one branch requires a heavy build or test run while work continues on another.
Content refresh
Runs a scheduled audit of existing tool, MCP, skill, and news entries to identify and address stale pricing, broken documentation links, outdated capabilities, and weakened prose that quietly degrades directory quality. This maintenance rhythm prevents the directory from accumulating digital rot as tools evolve and entries grow outdated.