An SEO audit checklist keeps you from auditing on vibes. Without one, you fix whatever you notice and miss the structural problems that quietly cap a whole site. This checklist is organized the way search engines and answer engines actually process a page: can they reach it, can they index it, can they understand it, and can they cite it.
This is a cluster page under the SEO audit pillar. For deep dives, follow the links to the technical and on-page guides.
How to use this checklist
Work in order. Crawlability first, because a page nobody can reach cannot rank no matter how good it is. Then indexing, then technical health, then on-page, then AEO. Within each section, fix template-level issues before one-off pages: a single fix to a page template often clears hundreds of individual flags.
SEO AEO Specialist runs this whole checklist automatically. The free audit covers up to 50 pages with no signup; the €9 report runs it across your full site with a prioritized fix list.
1. Crawlability and access
[ ] robots.txt does not block important pages or resources (CSS, JS)
[ ] No unintended Disallow rules affecting money pages
[ ] AI crawlers (GPTBot, ClaudeBot, PerplexityBot) are allowed if you want AI-search visibility
[ ] No crawl traps: infinite calendars, faceted-navigation URL explosions, session IDs in URLs
[ ] Server returns correct status codes (200 for live pages, 404 for gone, not soft-404s)
[ ] Redirect chains collapsed to a single hop
[ ] Important pages reachable within three clicks of the homepage
2. Indexing
[ ] No accidental noindex on pages that should rank
[ ] Canonical tags point to the intended version of each page
[ ] No conflicting signals (canonical says one URL, sitemap lists another)
[ ] XML sitemap exists, is current, and lists only indexable, canonical URLs
[ ] Sitemap submitted in Search Console
[ ] Index coverage checked: pages you want indexed are indexed; thin/duplicate pages are not
[ ] Pagination and faceted pages handled deliberately, not by accident
3. Technical health
[ ] LCP under 2.5s at the 75th percentile (Largest Contentful Paint)
[ ] INP under 200ms (Interaction to Next Paint — the responsiveness metric that replaced FID)
[ ] CLS under 0.1 (Cumulative Layout Shift)
[ ] HTTPS everywhere, no mixed content
[ ] Mobile-friendly and rendered correctly on mobile (mobile-first indexing)
[ ] JavaScript-rendered content is visible to crawlers (server-side or hydrated in a crawlable way)
[ ] Structured data valid and error-free
[ ] hreflang correct on multilingual/multiregional sites
[ ] Image files sized and compressed; modern formats where possible
Core Web Vitals pass when at least 75% of real-user visits hit the "good" threshold for each metric. INP is the most commonly failed metric in 2026, so check it first.
4. On-page quality
[ ] Every page has a unique, descriptive title tag (roughly 50–60 characters)
[ ] Every page has a unique meta description (150–160 characters)
[ ] Exactly one H1 per page, matching search intent
[ ] Logical heading hierarchy (H1 → H2 → H3, no skipped levels)
[ ] Content depth matches intent — no thin pages competing on competitive queries
[ ] Primary keyword and its variants used naturally, not stuffed
[ ] Internal links from relevant pages using descriptive anchor text
[ ] No orphaned pages (pages with zero internal links pointing to them)
[ ] Images have descriptive alt text
[ ] No duplicate or near-duplicate content across URLs
See the full on-page SEO audit guide for the depth-of-content and internal-linking passes.
5. Answer-engine readiness (AEO)
[ ] Key pages open with an answer-first capsule (40–60 words) a model can lift and cite
[ ] FAQ and how-to content uses clear question-answer structure
[ ] Schema markup applied where relevant (FAQPage, Article, Product, Organization)
[ ] Facts are self-contained in the text, not locked in images or scripts
[ ] AI crawlers can access the content (not blocked in robots.txt)
[ ] Consider an llms.txt file indexing your most important pages for AI systems
[ ] Entities and claims are specific and verifiable, not vague marketing language
AEO is no longer optional. AI Overviews and chat assistants answer a large and growing share of queries directly. If a model cannot extract a clean answer from your page, a competitor's page gets cited instead.
Priority order when everything is broken
You will not fix everything at once. Rank findings like this:
| Priority | Fix these first |
|---|---|
| Critical | Indexability blocks, noindex on money pages, broken canonicals, site-wide crawl traps |
| High | Missing/duplicate titles at template level, broken internal links, failing Core Web Vitals |
| Medium | Thin content, weak internal linking, missing schema |
| Low | Alt text gaps, minor meta description tweaks, single-page issues |
SEO AEO Specialist prioritizes findings automatically so you are not guessing which flag matters.
FAQ
What is included in a complete SEO audit checklist?
Five sections: crawlability, indexing, technical health (including Core Web Vitals), on-page quality, and answer-engine readiness. A modern checklist that skips AEO is incomplete in 2026.
In what order should I fix SEO audit findings?
Fix in order of impact: indexability and crawl blocks first, then template-level technical and on-page issues, then content depth and schema, then one-off cosmetic items.
How often should I run through this checklist?
Quarterly for stable sites, and after any migration, redesign, or large content release. Ongoing monitoring (€19/mo per domain) runs it continuously.
Do I need paid tools to complete this checklist?
No. You can run the full checklist on up to 50 pages free with SEO AEO Specialist, no signup. The €9 report extends it to your whole site with prioritized fixes.
What are the current Core Web Vitals thresholds?
LCP under 2.5 seconds, INP under 200 milliseconds, and CLS under 0.1, measured at the 75th percentile of real-user visits.
How is an SEO audit different from an AEO audit?
An SEO audit checks whether search engines can crawl, index, and rank you. AEO checks whether answer engines can extract and cite you. SEO AEO Specialist does both in one pass.
Run the whole checklist automatically. Start free on up to 50 pages, no signup. Get the full-site report for €9, or keep the checklist running with monitoring at €19/mo per domain.
Go deeper: technical SEO audit and on-page SEO audit. Back to the SEO audit pillar.
Technical SEO Audit: Crawl, Index, Speed, AI | SEO AEO Specialist
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