SEO audit skill
When the user wants to run an SEO audit, technical SEO audit, or site health check.
by kostja94·MIT license·★ 1,006 Stars on the repo·GitHub ↗
Use now
npx degit kostja94/marketing-skills/skills/strategies/structure/seo-audit#main ~/.claude/skills/seo-audit-kostja94Checked ·commit main
Files of SEO audit
SKILL.md
Show the full text80 lines
Strategies: SEO Audit
Guides end-to-end SEO audit: technical foundation, on-page, content, and off-page. Execute in order—technical blockers prevent indexing; on-page limits rankings; content and off-page build authority. Use when auditing an existing site or planning fixes.
When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.
Audit Order
| Phase | Focus | Skills |
|---|---|---|
| 1. Technical | Crawl, index, sitemap | robots-txt, xml-sitemap, canonical-tag, indexing, site-crawlability |
| 2. On-Page | Metadata, structure, schema | title-tag, meta-description, page-metadata, schema-markup, internal-links, heading-structure |
| 3. Content | Gaps, intent, optimization | keyword-research, content-strategy, content-optimization |
| 4. Off-Page | Backlinks, authority | link-building, backlink-analysis |
Principle: Fix foundation before optimizing pages. See seo-strategy for workflow and prioritization.
Technical Checklist
| Item | Check | Skill |
|---|---|---|
| robots.txt | Syntax; not blocking important pages | robots-txt |
| Sitemap | Submitted to GSC; indexable pages only; ≤50K URLs per sitemap | xml-sitemap |
| HTTPS | Sitewide; valid certificate | canonical-tag |
| 404/5xx | Proper status codes; fix or redirect | site-crawlability |
| noindex | No accidental noindex on key pages | indexing |
| Canonical | Correct; no conflicts | canonical-tag |
| Core Web Vitals | LCP ≤2.5s, INP ≤200ms, CLS <0.1 | core-web-vitals |
| Mobile | Mobile-first; content parity; no intrusive interstitials | mobile-friendly |
| Crawlability | Redirect chains, broken links, orphan pages | site-crawlability |
On-Page Checklist
| Item | Check | Skill |
|---|---|---|
| Title | Unique; 50–60 chars; keyword in first 10 words | title-tag |
| Meta description | 150–160 chars; CTA | meta-description |
| Headings | One H1; H1→H2→H3 hierarchy | heading-structure |
| Images | Alt text; no decorative alt for decorative images | image-optimization |
| Schema | Valid; Rich Results Test | schema-markup |
| Internal links | From strong pages; descriptive anchors | internal-links |
| Duplicate content | Canonical; consolidate or differentiate | canonical-tag |
Content & Off-Page
| Phase | Focus | Skill |
|---|---|---|
| Content gap | Missing topics vs competitors | content-strategy, competitor-research |
| Intent match | Content matches search intent | content-optimization |
| Backlinks | Toxic links; link gap vs competitors | backlink-analysis, link-building |
Frequency
| Cadence | Use |
|---|---|
| Full audit | Quarterly |
| Check-ins | Monthly (GSC, indexing, Core Web Vitals) |
Output Format
- Phase 1–4 findings (technical → on-page → content → off-page)
- Priority list (P0 blocker → P1 core → P2 important)
- Skill mapping (which skill for each fix)
- Timeline (immediate vs short-term vs ongoing)
Related Skills
- seo-strategy: Workflow order, prioritization, when to invest in SEO
- google-search-console: Performance, indexing, Core Web Vitals data
- site-crawlability: Redirect chains, broken links, crawl budget
- indexing: Indexing issues, noindex, Search Console
- core-web-vitals: LCP, INP, CLS optimization
| 1 | |
| 2 | name seo-audit |
| 3 | description When the user wants to run an SEO audit, technical SEO audit, or site health check. Also use when the user mentions "SEO audit," "technical audit," "site audit," "crawl audit," "indexing audit," "SEO health," or "fix SEO issues." For prioritization and organic strategy, use seo-strategy. For GSC data analysis, use google-search-console. |
| 4 | metadata |
| 5 | version 1.1.0 |
| 6 | |
| 7 | |
| 8 | # Strategies: SEO Audit |
| 9 | |
| 10 | Guides end-to-end SEO audit: technical foundation, on-page, content, and off-page. Execute in order—technical blockers prevent indexing; on-page limits rankings; content and off-page build authority. Use when auditing an existing site or planning fixes. |
| 11 | |
| 12 | **When invoking**: On **first use**, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On **subsequent use** or when the user asks to skip, go directly to the main output. |
| 13 | |
| 14 | ## Audit Order |
| 15 | |
| 16 | | Phase | Focus | Skills | |
| 17 | |-------|-------|--------| |
| 18 | | **1. Technical** | Crawl, index, sitemap | robots-txt, xml-sitemap, canonical-tag, indexing, site-crawlability | |
| 19 | | **2. On-Page** | Metadata, structure, schema | title-tag, meta-description, page-metadata, schema-markup, internal-links, heading-structure | |
| 20 | | **3. Content** | Gaps, intent, optimization | keyword-research, content-strategy, content-optimization | |
| 21 | | **4. Off-Page** | Backlinks, authority | link-building, backlink-analysis | |
| 22 | |
| 23 | **Principle**: Fix foundation before optimizing pages. See **seo-strategy** for workflow and prioritization. |
| 24 | |
| 25 | ## Technical Checklist |
| 26 | |
| 27 | | Item | Check | Skill | |
| 28 | |------|-------|-------| |
| 29 | | **robots.txt** | Syntax; not blocking important pages | robots-txt | |
| 30 | | **Sitemap** | Submitted to GSC; indexable pages only; ≤50K URLs per sitemap | xml-sitemap | |
| 31 | | **HTTPS** | Sitewide; valid certificate | canonical-tag | |
| 32 | | **404/5xx** | Proper status codes; fix or redirect | site-crawlability | |
| 33 | | **noindex** | No accidental noindex on key pages | indexing | |
| 34 | | **Canonical** | Correct; no conflicts | canonical-tag | |
| 35 | | **Core Web Vitals** | LCP ≤2.5s, INP ≤200ms, CLS <0.1 | core-web-vitals | |
| 36 | | **Mobile** | Mobile-first; content parity; no intrusive interstitials | mobile-friendly | |
| 37 | | **Crawlability** | Redirect chains, broken links, orphan pages | site-crawlability | |
| 38 | |
| 39 | ## On-Page Checklist |
| 40 | |
| 41 | | Item | Check | Skill | |
| 42 | |------|-------|-------| |
| 43 | | **Title** | Unique; 50–60 chars; keyword in first 10 words | title-tag | |
| 44 | | **Meta description** | 150–160 chars; CTA | meta-description | |
| 45 | | **Headings** | One H1; H1→H2→H3 hierarchy | heading-structure | |
| 46 | | **Images** | Alt text; no decorative alt for decorative images | image-optimization | |
| 47 | | **Schema** | Valid; Rich Results Test | schema-markup | |
| 48 | | **Internal links** | From strong pages; descriptive anchors | internal-links | |
| 49 | | **Duplicate content** | Canonical; consolidate or differentiate | canonical-tag | |
| 50 | |
| 51 | ## Content & Off-Page |
| 52 | |
| 53 | | Phase | Focus | Skill | |
| 54 | |-------|-------|-------| |
| 55 | | **Content gap** | Missing topics vs competitors | content-strategy, competitor-research | |
| 56 | | **Intent match** | Content matches search intent | content-optimization | |
| 57 | | **Backlinks** | Toxic links; link gap vs competitors | backlink-analysis, link-building | |
| 58 | |
| 59 | ## Frequency |
| 60 | |
| 61 | | Cadence | Use | |
| 62 | |---------|-----| |
| 63 | | **Full audit** | Quarterly | |
| 64 | | **Check-ins** | Monthly (GSC, indexing, Core Web Vitals) | |
| 65 | |
| 66 | ## Output Format |
| 67 | |
| 68 | **Phase 1–4 findings** (technical → on-page → content → off-page) |
| 69 | **Priority list** (P0 blocker → P1 core → P2 important) |
| 70 | **Skill mapping** (which skill for each fix) |
| 71 | **Timeline** (immediate vs short-term vs ongoing) |
| 72 | |
| 73 | ## Related Skills |
| 74 | |
| 75 | **seo-strategy**: Workflow order, prioritization, when to invest in SEO |
| 76 | **google-search-console**: Performance, indexing, Core Web Vitals data |
| 77 | **site-crawlability**: Redirect chains, broken links, crawl budget |
| 78 | **indexing**: Indexing issues, noindex, Search Console |
| 79 | **core-web-vitals**: LCP, INP, CLS optimization |
| 80 |
Discussion
Alternatives
Agentic Browsing ReadinessAudit and fix agent readiness: the Lighthouse Agentic Browsing fraction, accessibility tree for agents, robots.txt and Content-Signal for AI agents, WAF treatment of agent traffic, llms.txt, Markdown delivery, ai-catalog.json, /.well-known discovery files, and WebMCP tools. Exclude AI citability and brand signals (seo-geo) and commerce protocol depth (seo-ecommerce).Backlink Profile AnalysisBacklink profile analysis: referring domains, anchor text distribution, toxic link detection, competitor gap analysis. Works with free APIs (Moz, Bing Webmaster, Common Crawl) and DataForSEO extension. Use when user says backlinks, link profile, referring domains, anchor text, toxic links, link gap, link building, disavow, or backlink audit.
/setup-cmsConnect a CMS to notfair SEO tools. Guides users through configuring WordPress, Strapi, Contentful, or Ghost — tests the connection, and writes credentials to .env.local. Once set up, seo-analysis automatically cross- references CMS content against Google Search Console data. Use whenever the user says "connect my CMS", "set up WordPress", "configure Strapi", "add Contentful", "connect Ghost", or "CMS setup". Also trigger if the user asks why no CMS data appears in a seo-analysis report.Backlink checkBacklink profile for any domain — referring domains, authority, anchors, new/lost links, and a side-by-side vs a competitor. Use when asked "check my backlinks", "backlink profile of X", "who links to them", or "link gap vs competitor".Browse more free Claude skills or everything in Marketing.