TECHNICAL · SEO GLOSSARY
SEO Audit Checklist
An SEO audit checklist is a structured list of technical, on-page, and off-page elements to evaluate when auditing a website\'s SEO performance. A comprehensive checklist covers crawlability, indexability, structured data, Core Web Vitals, content quality, and AI visibility.
Definition
An SEO audit checklist organises the full scope of SEO evaluation into a reproducible framework. **Technical SEO checklist items**: (1) **Crawlability** — robots.txt blocking analysis; crawl depth of key pages; internal link orphans; crawl budget waste (blocked but sitemapped URLs). (2) **Indexability** — noindex meta tags on indexable pages; canonical tag consistency; duplicate content and parameter handling; URL canonicalisation configuration. (3) **Site architecture** — internal link structure; URL structure (keyword-descriptive, no unnecessary parameters); breadcrumb implementation; pagination handling. (4) **Core Web Vitals** — LCP (Largest Contentful Paint) <2.5s; CLS (Cumulative Layout Shift) <0.1; INP (Interaction to Next Paint) <200ms — from real CrUX field data, not Lighthouse lab estimates. (5) **Structured data** — property-level validation of Article, FAQPage, Product, LocalBusiness, BreadcrumbList, and HowTo schemas; JavaScript rendering gap check (schema in server HTML vs GTM-injected). (6) **Mobile and international** — mobile-first indexing configuration; hreflang implementation for multilingual/multi-regional sites; mobile usability issues. **On-page checklist items**: title tag length and keyword inclusion; meta description presence and length; heading hierarchy (one H1, logical H2/H3 structure); image alt text; internal link anchor text relevance; content-to-query intent alignment. **Off-page checklist items**: backlink profile health (toxic link screening); brand mention monitoring; competitor backlink gap analysis. **AI visibility checklist items** (GEO score): AI crawler access in robots.txt; llms.txt presence and quality; FAQPage JSON-LD in server-rendered HTML; question-heading ratio ≥20%; content chunkability ≤400 words average section length.
Why it matters for SEO
An SEO audit checklist ensures comprehensive coverage across all SEO dimensions — preventing the common pattern where audits focus on high-visibility issues (title tags, meta descriptions) while missing technically impactful but less obvious problems (JavaScript rendering gaps, soft 404s, crawl budget waste, structured data property errors). Checklists also enable consistent audit quality across team members and over time, making audits reproducible and comparable between periods.
How DeepSEOAnalysis checks this
DeepSEOAnalysis runs the technical and AI visibility sections of the SEO audit checklist automatically: crawlability analysis (robots.txt, crawl depth, orphaned pages), indexability checks (noindex, canonical structure), real CrUX field data for Core Web Vitals (not Lighthouse estimates), property-level structured data validation with corrected markup, and GEO score across all five AI visibility signals. On-page checks (title, meta description, heading structure, alt text, internal links) are validated for every crawled page. The audit report is structured as a prioritised checklist with severity levels (critical, warning, info).
Useful tools and resources
GLOSSARY
Related terms
technical
Technical SEO
The discipline of optimising a website\'s infrastructure — crawlability, indexability, site speed, structured data, and security — so that search engines can discover, render, and understand pages correctly.
Read definition →strategy
SEO Workflow
An SEO workflow is a documented, repeatable process for planning, executing, and measuring SEO activities — covering content production, technical audits, link building, and performance reporting. Documented workflows reduce execution time, ensure consistency, and enable delegation across teams.
Read definition →structured data
Structured Data
Machine-readable annotations added to HTML — usually JSON-LD — that explicitly describe what a page is about to search engines and AI systems.
Read definition →performance
Core Web Vitals
Three Google metrics — LCP, INP, and CLS — that measure real-user loading, interactivity, and visual stability.
Read definition →technical
GEO Optimization
GEO (Generative Engine Optimization) is the practice of optimising content and technical signals specifically to increase citation and visibility in AI-generated search results — including Google AI Overviews, Perplexity, ChatGPT search, Bing Copilot, and similar generative search products. GEO builds on traditional SEO foundations but adds AI-specific signals: llms.txt, FAQPage structured data, question-heading architecture, and AI crawler access configuration.
Read definition →See how your site scores on SEO Audit Checklist.
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