Audit technical SEO health - crawlability, indexing, Core Web Vitals, robots.txt, sitemaps, canonicals, redirects, HTTPS, and structured data - with scored results and a prioritized fix roadmap.
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name: technical-seo-checker
description: Use when the user asks to check technical SEO - audits crawlability, indexing, Core Web Vitals, robots.txt, sitemaps, canonicals, redirects, and migrations. Not for on-page tags or content (use on-page-seo-auditor). Uses WebFetch.
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Find the technical issues that stop search engines from crawling, indexing, and ranking a site.
## Workflow
1. Run a full audit for a URL/domain, or scope to a specific check (e.g. Core Web Vitals, crawlability).
2. Audit crawlability and indexability - robots.txt, sitemaps, canonical tags, redirects, and index status.
3. Measure Core Web Vitals (LCP, INP) and mobile-friendliness.
4. Check HTTPS/security (HSTS), URL structure, structured data, and international SEO signals.
5. Score the results and produce a prioritized fix roadmap; for site migrations, apply the migration checklist.
6. Finish with the standard handoff summary from the repository Skill Contract.
Full skill & source: https://github.com/aaron-he-zhu/seo-geo-claude-skills/tree/dea9f4d6efaa886ddc5dcef5b597dd2b8650ff18/optimize/technical-seo-checker