# SEO Fundamentals

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

- Skill: `yunaamelia/seo-fundamentals` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add yunaamelia/seo-fundamentals`
- Raw SKILL.md: https://api.skillmd.com/api/skills/yunaamelia/seo-fundamentals/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Marketing & Growth
- Author: yunaamelia (https://skillmd.com/u/yunaamelia)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/yunaamelia/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

### Site Structure

| Element        | Purpose            |
| -------------- | ------------------ |
| XML sitemap    | Help crawling      |
| robots.txt     | Control access     |
| Canonical tags | Prevent duplicates |
| HTTPS          | Security signal    |

### Performance

| Factor          | Impact         |
| --------------- | -------------- |
| Page speed      | Core Web Vital |
| Mobile-friendly | Ranking factor |
| Clean URLs      | Crawlability   |

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## 4. Content SEO Principles

### Page Elements

| Element          | Best Practice              |
| ---------------- | -------------------------- |
| Title tag        | 50-60 chars, keyword front |
| Meta description | 150-160 chars, compelling  |
| H1               | One per page, main keyword |
| H2-H6            | Logical hierarchy          |
| Alt text         | Descriptive, not stuffed   |

### Content Quality

| Factor      | Importance             |
| ----------- | ---------------------- |
| Depth       | Comprehensive coverage |
| Freshness   | Regular updates        |
| Uniqueness  | Original value         |
| Readability | Clear writing          |

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## 5. Schema Markup Types

| Type           | Use              |
| -------------- | ---------------- |
| Article        | Blog posts, news |
| Organization   | Company info     |
| Person         | Author profiles  |
| FAQPage        | Q&A content      |
| Product        | E-commerce       |
| Review         | Ratings          |
| BreadcrumbList | Navigation       |

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## 6. AI Content Guidelines

### What Google Looks For

| ✅ Do                 | ❌ Don't               |
| --------------------- | ---------------------- |
| AI draft + human edit | Publish raw AI content |
| Add original insights | Copy without value     |
| Expert review         | Skip fact-checking     |
| Follow E-E-A-T        | Keyword stuffing       |

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## 7. Ranking Factors (Prioritized)

| Priority | Factor                            |
| -------- | --------------------------------- |
| 1        | Quality, relevant content         |
| 2        | Backlinks from authority sites    |
| 3        | Page experience (Core Web Vitals) |
| 4        | Mobile optimization               |
| 5        | Technical SEO fundamentals        |

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## 8. Measurement

| Metric          | Tool                   |
| --------------- | ---------------------- |
| Rankings        | Search Console, Ahrefs |
| Traffic         | Analytics              |
| Core Web Vitals | PageSpeed Insights     |
| Indexing        | Search Console         |
| Backlinks       | Ahrefs, Semrush        |

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> **Remember:** SEO is a long-term game. Quality content + technical excellence + patience = results.