UitbreidenOS SEO Audit Skill
When to activate
- Running a comprehensive SEO audit on a website
- Investigating why organic traffic dropped
- Identifying technical SEO issues blocking crawl or indexing
- Auditing a competitor's SEO strategy
- Prioritising SEO fixes by estimated traffic impact
When NOT to use
- Real-time rank tracking — use Ahrefs, SEMrush, or Google Search Console
- Link building execution — requires outreach tools
- Paid search (Google Ads) — different channel entirely
Instructions
Technical SEO audit
Run a technical SEO audit. Provide:
Site URL: [URL]
Tools available: [Google Search Console / Screaming Frog / Ahrefs / SEMrush / PageSpeed Insights]
Check these technical factors:
CRAWL & INDEX
- Is the site indexable? Check robots.txt and meta robots tags
- Any noindex tags blocking important pages?
- XML sitemap: present, submitted to GSC, errors?
- Crawl errors in Google Search Console?
- Canonical tags: correct, no self-referencing issues?
TECHNICAL PERFORMANCE
- Core Web Vitals (LCP, FID/INP, CLS): pass/fail?
- Page speed: mobile and desktop scores (PageSpeed Insights)
- Mobile-friendly: passes Google's mobile usability test?
- HTTPS: all pages, no mixed content?
SITE STRUCTURE
- URL structure: clean, descriptive, no duplicate parameters?
- Internal linking: orphan pages? Deep pages (> 3 clicks from home)?
- Pagination: rel prev/next or use of canonical?
- Site architecture: logical categories, appropriate breadcrumbs?
For each issue found:
- Severity: Critical / High / Medium / Low
- Estimated traffic impact
- Fix recommendation
- Implementation effort: Easy / Medium / Hard
On-page SEO audit
Audit on-page SEO for [URL or page type]:
CONTENT
- Title tags: unique, under 60 chars, includes primary keyword?
- Meta descriptions: compelling, under 160 chars, unique?
- H1: one per page, includes keyword?
- Header structure: logical H1→H2→H3 hierarchy?
- Content depth: covers the topic comprehensively vs. top-ranking pages?
- Keyword usage: natural, no stuffing, LSI terms included?
- Content freshness: last updated date, stale content?
MEDIA
- Images: alt text present, descriptive, not keyword-stuffed?
- Image file sizes: compressed for performance?
- Videos: transcripts, schema markup?
STRUCTURED DATA
- Schema markup present? (Article, Product, FAQ, How-to, Review, LocalBusiness)
- Valid per Google's Rich Results Test?
- Any missing schema opportunities?
Provide a prioritised fix list.
Competitor SEO analysis
Analyse [competitor URL] vs. my site [my URL]:
KEYWORD GAP
- What keywords do they rank for that I don't?
- What's their estimated organic traffic?
- Which of their top pages generate the most traffic?
CONTENT GAP
- What content do they have that I'm missing?
- Which topics in our space do they own?
BACKLINK GAP
- Domain authority comparison
- How many referring domains do they have vs. me?
- Their best backlink sources (for outreach research)
Prioritise: which gaps are most achievable for me to close in the next 90 days?
Core Web Vitals fix priorities
My Core Web Vitals scores:
- LCP (Largest Contentful Paint): [Xs] — target < 2.5s
- INP (Interaction to Next Paint): [Xms] — target < 200ms
- CLS (Cumulative Layout Shift): [X] — target < 0.1
Site tech stack: [Next.js / WordPress / Shopify / other]
For each failing metric:
1. What is the most likely cause on my tech stack?
2. What are the top 3 fixes to implement first?
3. Estimated improvement from each fix?
SEO audit report
Generate an SEO audit executive summary for [site].
Audit findings: [paste key issues found]
Format:
1. Overall SEO health score (1-10) with rationale
2. Critical issues (must fix — blocking traffic or indexing)
3. High-priority opportunities (biggest estimated traffic gains)
4. Quick wins (easy to implement, immediate impact)
5. 90-day SEO roadmap with priorities
Example
User: My blog's traffic dropped 40% after Google's March 2026 core update. Run an audit.
Claude's audit framework:
- Check Google Search Console for manual actions or coverage issues
- Identify which pages lost rankings (position changes report)
- Check if dropped pages have thin content, low E-E-A-T signals, or duplicate content
- Analyse top-performing pages that survived — what do they have that dropped pages don't?
- Review site-wide: overly SEO-optimised anchor text? Thin affiliate content? AI-generated without human expertise signals?
- Generate prioritised fix list with estimated recovery timeline per fix category