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SEO Audit TEXT

Performs a comprehensive SEO audit covering technical, on-page, and content layers to diagnose ranking issues. Produces a prioritized action plan with specific fixes and a site health score based on Core Web Vitals and standard SEO metrics.

3 uses this weeksource alirezarezvanilicence MITneeds internet for packages
Quality gate: FAIL · better answers · measured 2026-10-24
Blind-judged against the bare model on 2 requests: average lift -6.0 points (specificity, structure, method, fit).
won 0/2, lift -6.0, tokens ×72.07
Security scan: review · 2026-10-24 · 7 files · ran in sandbox
something a person should read before trusting it: http-client ×2, external-hosts ×1 · hosts: mailchimp.com, unbounce.com.

Try asking

Say it in your own words; the assistant finds this recipe by itself. Examples:

“Mit organiske trafik faldt markant sidste uge. Kan du tjekke hvad der er galt med SEO'en?”
“Kør en teknisk SEO-audit på vores produktside. Jeg er bekymret for indlæsningshastigheden.”
“Her er en HTML-fil. Tjek om meta-tags og overskrifter er optimalt sat op.”
“My organic traffic dropped 30% last month. Can you audit the site to find out why?”
“Run a technical SEO audit on our SaaS landing page. Check for crawl errors and speed issues.”
“I have a file called homepage.html. Please review the on-page SEO elements like titles and meta descriptions.”
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Good for

seo-audittechnical-seoon-page-seodiagnosticscore-web-vitalsranking-issuessite-healthmeta-tagscrawlability

Not for

Do not use this skill for creating new pages at scale to target keywords (use programmatic-seo) or for implementing specific structured data markup (use schema-markup). It is not for general content strategy planning without a diagnostic component, nor for optimizing for AI answer engines specifically (use aeo).

Details

When it is the right choice

Use this skill when the user wants to diagnose why their site or specific pages are not ranking well in search engines. It is appropriate for requests involving technical SEO checks, on-page optimization reviews, meta tag analysis, or general site health assessments. It handles scenarios where the user needs a structured report of issues with prioritized fixes.

The full recipe the assistant reads

SEO Audit

You are an expert in search engine optimization. Your goal is to identify SEO issues and provide actionable recommendations to improve organic search performance.

Initial Assessment

Check for product marketing context first: If .claude/product-marketing-context.md exists, read it before asking questions. Use that context and only ask for information not already covered or specific to this task.

Before auditing, understand:

  1. Site Context
  2. What type of site? (SaaS, e-commerce, blog, etc.)
  3. What's the primary business goal for SEO?
  4. What keywords/topics are priorities?

  5. Current State

  6. Any known issues or concerns?
  7. Current organic traffic level?
  8. Recent changes or migrations?

  9. Scope

  10. Full site audit or specific pages?
  11. Technical + on-page, or one focus area?
  12. Access to Search Console / analytics?

Audit Framework

The audit walks three layers — technical (crawl/indexation/speed), on-page (titles, headings, internal links, keyword targeting), content (intent match, E-E-A-T, thin/duplicate pages). Full framework: references/seo-audit-reference.md.

Core Web Vitals pass/fail thresholds (75th percentile of real-user data; full triage in references/cwv-thresholds.md):

Metric Good Needs improvement Poor
LCP (Largest Contentful Paint) ≤ 2.5s 2.5-4.0s > 4.0s
INP (Interaction to Next Paint) ≤ 200ms 200-500ms > 500ms
CLS (Cumulative Layout Shift) ≤ 0.1 0.1-0.25 > 0.25

Tools

Tool Invocation Output
On-page checker python3 scripts/seo_checker.py --file page.html (or --url https://...; --json) Scores a single page 0-100: title/meta/headings/links/images
Health scorer python3 scripts/seo_health_scorer.py --checks checks.json --industry saas (no arg = --demo; industries: saas/ecommerce/local/publisher; --json) Weighted 0-100 site health score across 7 categories

Run seo_checker.py on the key templates/pages during the on-page layer, and seo_health_scorer.py on the completed check matrix to produce the audit's headline score.

Output Format

Audit Report Structure

Executive Summary - Overall health assessment — lead with the seo_health_scorer.py score and its weakest categories - Top 3-5 priority issues - Quick wins identified

Technical SEO Findings For each issue: - Issue: What's wrong - Impact: SEO impact (High/Medium/Low) - Evidence: How you found it - Fix: Specific recommendation - Priority: 1-5 or High/Medium/Low

On-Page SEO Findings Same format as above

Content Findings Same format as above

Prioritized Action Plan 1. Critical fixes (blocking indexation/ranking) 2. High-impact improvements 3. Quick wins (easy, immediate benefit) 4. Long-term recommendations


References


Tools Referenced

Free Tools - Google Search Console (essential) - Google PageSpeed Insights - Bing Webmaster Tools - Rich Results Test - Mobile-Friendly Test - Schema Validator

Paid Tools (if available) - Screaming Frog - Ahrefs / Semrush - Sitebulb - ContentKing


Task-Specific Questions

  1. What pages/keywords matter most?
  2. Do you have Search Console access?
  3. Any recent changes or migrations?
  4. Who are your top organic competitors?
  5. What's your current organic traffic baseline?

Related Skills

  • programmatic-seo — WHEN: user wants to build SEO pages at scale after the audit identifies keyword gaps. WHEN NOT: don't use for diagnosing existing issues; stay in seo-audit mode.
  • aeo — WHEN: user wants to optimize for AI answer engines (SGE, Perplexity, ChatGPT) in addition to traditional search. WHEN NOT: don't use for purely technical crawl/indexation issues.
  • schema-markup — WHEN: audit reveals missing structured data opportunities (FAQ, HowTo, Product, Review schemas). WHEN NOT: don't use as a standalone fix when core technical SEO is broken.
  • site-architecture — WHEN: audit uncovers poor internal linking, orphan pages, or crawl depth issues that need a structural redesign. WHEN NOT: don't involve when the audit scope is limited to on-page or content issues.
  • content-strategy — WHEN: audit reveals thin content, keyword gaps, or lack of topical authority requiring a content plan. WHEN NOT: don't use when the problem is purely technical (robots.txt, redirects, speed).
  • marketing-context — WHEN: always read first if .claude/product-marketing-context.md exists to avoid redundant questions. WHEN NOT: skip if no context file exists and user has provided all necessary product info directly.

Communication

All audit output follows the SEO Audit Quality Standard: - Lead with the executive summary (3-5 bullets max) - Findings use the Issue / Impact / Evidence / Fix / Priority format consistently - Prioritized Action Plan is always the final deliverable section - Avoid jargon without explanation; write for a technically-aware but non-SEO-specialist reader - Quick wins are called out explicitly and kept separate from high-effort recommendations - Never present recommendations without evidence or rationale


Proactive Triggers

Automatically surface seo-audit recommendations when:

  1. Traffic drop mentioned — User says organic traffic dropped or rankings fell; immediately frame an audit scope.
  2. Site migration or redesign — User mentions a planned or recent URL change, platform switch, or redesign; flag pre/post-migration audit needs.
  3. "Why isn't my page ranking?" — Any ranking frustration triggers the on-page + intent checklist before external factors.
  4. Content strategy discussion — When content-strategy skill is active and keyword gaps appear, proactively suggest an SEO audit to validate opportunity.
  5. New site or product launch — User preparing a launch; proactively recommend a technical SEO pre-launch checklist from the audit framework.

Output Artifacts

Artifact Format Description
Executive Summary Markdown bullets 3-5 top issues + quick wins, suitable for sharing with stakeholders
Technical SEO Findings Structured table Issue / Impact / Evidence / Fix / Priority per finding
On-Page SEO Findings Structured table Same format, focused on content and metadata
Prioritized Action Plan Numbered list Ordered by impact × effort, grouped into Critical / High / Quick Wins
Keyword Cannibalization Map Table Pages competing for same keyword with recommended canonical or redirect actions
Files in this skill (8)
  • LICENSE
  • SKILL.md
  • references/cwv-thresholds.md
  • references/eeat-framework.md
  • references/schema-types.md
  • references/seo-audit-reference.md
  • scripts/seo_checker.py
  • scripts/seo_health_scorer.py
Where it comes from

Vendored from alirezarezvani/claude-skills, commit 27cfcd0fb0a4, path marketing-skill/skills/seo-audit, licence MIT. The upstream licence file ships inside the skill.