# SEO Fundamentals

> SEO fundamentals, E-E-A-T, Core Web Vitals, and Google algorithm principles.

- Skill: `dokhacgiakhoa/seo-fundamentals` (Agent Skill, multi-file: 7 files)
- Install (CLI): `npx skillmds@latest add dokhacgiakhoa/seo-fundamentals`
- Raw SKILL.md: https://api.skillmd.com/api/skills/dokhacgiakhoa/seo-fundamentals/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Marketing & Growth
- Author: Dokhacgiakhoa (https://skillmd.com/u/dokhacgiakhoa)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/dokhacgiakhoa/seo-fundamentals

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# SEO Fundamentals

> Principles for search engine visibility.

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## 1. E-E-A-T Framework

| Principle | Signals |
|-----------|---------|
| **Experience** | First-hand knowledge, real examples |
| **Expertise** | Credentials, depth of knowledge |
| **Authoritativeness** | Backlinks, mentions, industry recognition |
| **Trustworthiness** | HTTPS, transparency, accurate info |

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## 2. Core Web Vitals

| Metric | Target | Measures |
|--------|--------|----------|
| **LCP** | < 2.5s | Loading performance |
| **INP** | < 200ms | Interactivity |
| **CLS** | < 0.1 | Visual stability |

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## 3. Technical SEO Principles

## 🧠 Knowledge Modules (Fractal Skills)

### 1. [Site Structure](./sub-skills/site-structure.md)
### 2. [Performance](./sub-skills/performance.md)
### 3. [Page Elements](./sub-skills/page-elements.md)
### 4. [Content Quality](./sub-skills/content-quality.md)
### 5. [What Google Looks For](./sub-skills/what-google-looks-for.md)