sk-labs SEO Fundamentals
Principles for search engine visibility.
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 |
2. Core Web Vitals
| Metric | Target | Measures |
|---|---|---|
| LCP | < 2.5s | Loading performance |
| INP | < 200ms | Interactivity |
| CLS | < 0.1 | Visual stability |
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 |
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 |
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 |
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 |
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 |
8. Measurement
| Metric | Tool |
|---|---|
| Rankings | Search Console, Ahrefs |
| Traffic | Analytics |
| Core Web Vitals | PageSpeed Insights |
| Indexing | Search Console |
| Backlinks | Ahrefs, Semrush |
Remember: SEO is a long-term game. Quality content + technical excellence + patience = results.