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Learn SEO and AI search
Practical guides, free checkers, original research, and plain-English definitions to help your website get found by Google and cited by AI.
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Go directly to the job you need to complete. Move between tools, explanations, and evidence whenever you need more context.
Check my website
Run a free SEO and GEO audit and see the highest-impact improvements first.
Choose a checker →↗Learn the fundamentals
Understand technical SEO, content quality, and how AI search discovers sources.
Browse essential guides →⌁Explore AI search data
See first-party citation benchmarks with transparent samples and methodology.
View the research →Recommended reading
Essential guides
Browse all 12 Learn guides ↓Show fewer Learn guides ↑
- AI Overviews: What They Are and How They WorkAI Overviews explained: what Google's AI-generated summary box is, how it differs from featured snippets, and how to check if you're cited.
- Bing Copilot SEO: Why Bing Indexing Comes FirstBing Copilot SEO starts with Bing indexing, not content quality. Learn why Bing Webmaster Tools matters and how to check your citation eligibility.
- Claude AI Citations: How Anthropic's Claude Cites SourcesHow Claude AI citations actually work: ClaudeBot training crawls vs. live web-search retrieval, and what makes content quotable.
- Gemini AI Visibility: Grounded vs. Training-Data AnswersGemini AI visibility depends on whether it grounds answers in Google Search or recalls training data — here's how each path works and why SEO still counts.
- GEO vs SEO: What Actually Differs (and What Doesn't)GEO vs SEO compared directly: different success metrics, different feedback loops, but the same crawlability and credibility fundamentals underneath.
- Google AI Mode SEO: What We Know So FarGoogle AI Mode SEO is still forming: learn how this full-page conversational surface differs from AI Overviews and what's confirmed vs. unproven.
- How to Appear in Google AI Overviews: A Practical GuideLearn how to appear in Google AI Overviews: rank organically first, structure answer-first content, align schema, and know the real limits.
- How to Get Cited by Perplexity: Citation MechanicsLearn how Perplexity's live retrieval, crawler tokens, and citation format decide which pages get cited — and how to make yours quotable.
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Guides by topic
Every in-depth article lives in one of these topic hubs, grouped by the question it answers.
Technical SEO guides
Crawl budget, canonical tags, robots.txt, structured data, Core Web Vitals — the mechanics search engines and AI crawlers actually depend on, explained without the fluff.
Browse the guides →GEO and AI search guides
How ChatGPT, Perplexity, Gemini, and AI Overviews actually pick what to cite, and what to change on a page to earn it — evidence-led, no speculation.
Browse the guides →Content SEO guides
Answer-first structure, internal linking, E-E-A-T signals, and content depth — the writing and editing decisions that move both classic rankings and AI citations.
Browse the guides →Local SEO guides
Google Business Profile optimization, local citations, and the on-page signals that decide whether a local business shows up in the map pack and local AI answers.
Browse the guides →SEO basics
Plain-language fundamentals for anyone new to SEO — what actually matters, in the order it matters, without the jargon or the upsell.
Browse the guides →
Diagnose a page
Free SEO & GEO checkers
Start broad, choose a platform-specific audit, or isolate one technical question. Every check works without an account.
Core SEO & GEO checkers
- SEO Audit ToolRun a free SEO audit on any page. Get a ranked SEO Health Score, a GEO Readiness Score for AI search, and no signup required.
- GEO Audit ToolRun a free GEO audit to see whether your page is structured for AI engines to find and cite. Evidence density, structure, authority, and AI-crawler access, scored.
- AI Visibility CheckerCheck whether your page is structured to be found and cited by ChatGPT, Gemini, and Perplexity. Free GEO Readiness Score, no signup.
- SEO Fix VerificationFind SEO issues, get a page-specific fix for each one, and verify the fix went live with an included re-scan. Not just a score — a closed loop.
- AI Citation TrackerTrack whether 9 AI engines actually mention your brand. Start with a free GEO Readiness check, then track real citations.
- ChatGPT Visibility CheckerCheck whether your page is structured for ChatGPT to cite, then track whether it actually does. Free GEO Readiness check, no signup.
- How Do I Fix My SEOHow to fix SEO issues, step by step: run a free audit, fix the highest-impact finding first, then verify it went live. The actual fix loop, not a generic checklist.
By platform
- WordPress SEO AuditRun a free SEO audit built for how WordPress sites actually break: plugin/theme title conflicts, thin archive pages, orphaned attachment URLs. No plugin install.
- Shopify SEO AuditRun a free SEO audit built for Shopify: duplicate product/collection URLs, app-script bloat, and the platform-locked robots.txt. No app install.
By audience
- SEO for Small BusinessA free SEO audit built for small business owners: findings ranked by impact vs. effort, plain-language explanations, no SEO background required.
- SEO Audits for FreelancersAudit client sites fast: a free, ranked SEO and AI-readiness check per page, with AI-written fixes and a verification re-scan on paid plans.
Specialized checkers
- On-Page SEO CheckerCheck a page's on-page SEO: title tag, meta description, heading hierarchy, image alt text, internal links, and canonical tags. Free, no signup.
- AI Crawler CheckerCheck whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended, bingbot (Copilot), and 50+ other named AI bots can actually reach your page. Free, per-bot robots.txt breakdown.
- AI Crawler Log AnalysisUpload your access log and see which of your sitemap pages GPTBot, ClaudeBot, PerplexityBot and other AI crawlers actually fetched, per crawler, verified by reverse DNS.
- AI Website Readiness CheckerRun a free, comprehensive AI-readiness check: crawler access, structured data, content structure, and E-E-A-T signals, scored together in one report.
Explore
Browse by need
Quick definitions
SEO & GEO glossary
Plain-English definitions, each connected to deeper context and related guidance.
- AI Hallucination Definition: What It MeansThe AI hallucination definition: a confident, false statement from a language model with no signal it's wrong. See a real example.
- AI Overview Definition: What It Means in SearchAI overview definition: an AI-generated summary block search engines insert above organic results, citing sources instead of listing links.
- Crawlability vs Indexability: What's the Difference?Crawlability is whether a search bot can access a page at all; indexability is whether that page can be stored and shown in results.
- How to Opt Out of AI Training DataHow to opt out of AI training data: block the right crawler in robots.txt without accidentally cutting off live AI search retrieval too.
- What Is a Knowledge Graph? A Quick DefinitionWhat is a knowledge graph? A structured map of entities and relationships that search engines and AI use to verify facts directly.
- What Is a Link Scheme? Definition & ExampleWhat is a link scheme? It's any link exchange, buying, or automated pattern built to fake rankings rather than earn real editorial links.
- What Is an AI Citation? A Quick DefinitionWhat is an AI citation? It's when an AI answer engine names or links a source in its response — the AI-search version of a search ranking.
- What Is an Answer Engine? Definition and ExamplesAn answer engine is a search or AI system built to give a direct, synthesized answer instead of a list of links to click through.
Browse all 26 definitions ↓Show fewer definitions ↑
- What Is an Entity in SEO? A Quick DefinitionWhat is an entity in SEO? A distinct, identifiable thing search engines track independently of keywords — here's how entity recognition works.
- What Is a SERP? Definition & ExampleWhat is a SERP? A clear definition of the search engine results page, plus an example of a modern SERP with an AI Overview.
- What Is a Vector Embedding? A Quick DefinitionWhat is a vector embedding? A numerical map of meaning that lets AI systems judge how similar two pieces of text really are.
- What Is a Zero-Click Search? Quick DefinitionWhat is a zero-click search? It's when Google answers a query on-page via a snippet, panel, or AI Overview, so no site gets the click.
- What Is Black Hat SEO? Glossary DefinitionBlack hat SEO refers to tactics that deliberately violate a search engine's guidelines to manipulate rankings, risking penalties that erase visibility.
- What Is Cloaking in SEO? Glossary DefinitionCloaking in SEO is showing search engine crawlers different content than real visitors see, specifically to manipulate rankings.
- What Is Crawl Budget? A Quick DefinitionWhat is crawl budget? It's the number of pages a search engine will crawl on your site in a given window — here's what shapes and wastes it.
- What Is Domain Rating? Definition & Practical UseWhat is Domain Rating? A vendor-specific 0-100 score estimating link authority — not a Google metric. See how it's defined and actually used.
- What Is Googlebot? Definition vs. Google-ExtendedWhat is Googlebot? Google's own web crawler for search indexing — distinct from Google-Extended, which governs AI training-data permissions.
- What Is GPTBot? OpenAI's Web Crawler ExplainedWhat is GPTBot? It's OpenAI's crawler for AI training data, separate from ChatGPT's live search bot — and controlled via robots.txt.
- What Is Gray Hat SEO? A Quick DefinitionGray hat SEO refers to tactics that sit in the ambiguous space between clearly compliant white hat SEO and clearly prohibited black hat SEO.
- What Is Grounding in AI? Definition & ExampleWhat is grounding in AI? It's anchoring a model's answer in retrieved real-world data instead of memory alone, cutting hallucination risk.
- What Is Keyword Stuffing? Glossary DefinitionWhat is keyword stuffing? It's the outdated practice of overloading a page with repeated keywords, and it's flagged as spam in modern search guidelines.
- What Is Page Experience in Google Search?Page experience is Google's umbrella term for signals measuring how good using a page feels beyond its raw content.
- What Is RAG AI? Retrieval-Augmented Generation DefinedRAG AI is an architecture where a system first retrieves relevant documents, then feeds them to a language model as context before it generates a response.
- What Is Structured Data? A Quick DefinitionWhat is structured data? It's standardized markup like JSON-LD that labels page content so search engines and AI can read it precisely.
- What Is Voice Search SEO? A Quick DefinitionWhat is voice search SEO? It's optimizing content to answer the longer, conversational questions people speak aloud to assistants.
- What Is White Hat SEO? A Quick DefinitionWhite hat SEO means practices that fully comply with a search engine's published guidelines while genuinely improving a site for real users.
Clear answers
Frequently asked questions
Short, self-contained explanations for readers, search engines, and answer engines.
What is the difference between SEO and GEO?
SEO improves visibility in traditional search results such as Google and Bing. GEO helps AI systems such as ChatGPT, Perplexity, Gemini, and AI Overviews understand, trust, and cite your content. Crawlability, structured data, and clear writing help both; GEO adds emphasis on direct answers, named entities, evidence, and source attribution.
Where should I start if I am new to SEO?
Start with a free SEO audit if you already have a page to improve. It identifies the highest-impact issues, and the guides here explain why they matter and how to fix them. If you are learning before building, begin with the essential guides and glossary.
Are the checkers on this page really free?
Yes. Every checker linked from this page runs a real, no-signup check. Some products also offer paid monitoring after the free check, but the initial result is complete rather than a teaser.
What is the difference between the glossary and reference guides?
The glossary gives concise definitions for individual terms. Reference guides explore one subject in more depth, with context and examples. Both make technical SEO and AI search understandable without specialist knowledge.
Do I need to fix every issue before my rankings improve?
No. Prioritize findings by likely impact and effort. A perfect score is not the objective; the useful outcome is measurable improvement in what search engines and AI systems can crawl, understand, trust, and cite.
Find out what your page needs next
Run a free audit, then use the guides to understand and fix every finding.