Marketing-skills seo-audit

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.

install

source · Clone the upstream repo

git clone https://github.com/kostja94/marketing-skills

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/kostja94/marketing-skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/strategies/structure/seo-audit" ~/.claude/skills/kostja94-marketing-skills-seo-audit && rm -rf "$T"

manifest: skills/strategies/structure/seo-audit/SKILL.md

source content

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