SEO Glossary

Every SEO term explained in plain language. No jargon. Practical examples.

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Featured terms

Backlink

A backlink is a link from one website to another. Backlinks are one of Google's top 3 ranking factors.

Core Web Vitals

Google's metrics that measure real-world user experience: loading speed (LCP), interactivity (INP), and visual stability (CLS).

E-E-A-T

Experience, Expertise, Authoritativeness, and Trustworthiness — Google's framework for evaluating content quality.

Featured Snippet

A highlighted search result at the top of Google's organic results that directly answers a user's query.

GEO (Generative Engine Optimization)

Optimizing content to be cited by AI-powered search engines like ChatGPT, Google AI Overviews, and Perplexity.

Health Score

Vantacron's 0-100 metric measuring overall SEO health across 200+ technical factors.

llms.txt

A plain text file at your domain root that provides AI language models with structured information about your site.

SEO Audit

A comprehensive evaluation of a website's search engine optimization across technical, on-page, and content factors.